• Blue Bullet Blog-The C6 Ownership Experience
  • Blue Bullet Blog-The C6 Ownership Experience
  • Blue Bullet Blog-The C6 Ownership Experience
  • Blue Bullet Blog-The C6 Ownership Experience

Page 24 of 24 FirstFirst ... 142021222324
Results 346 to 360 of 360
  1. #346
    Moderator Toms007's Avatar
    Join Date
    Sep 2004
    Location
    Southwest Kansas
    Posts
    6,017
    Post Thanks / Like
    Rides
    2

    Default

    Hib, I have a rattle on my Cadillac CTS that has been driving me crazy too. And like yours, it appears to be coming from the right rear. Also, like you, I 'visually' checked everything, but haven't found anything either....guess I'll get it back up on the lift and check the sway bars.
    2007 Atomic Orange Coupe Cashmere/black interior

    2005 CruiseFest Attendee (Bowling Green, KY) 2007 CruiseFest Attendee (Colorado Springs, CO)
    2008 CruiseFest Attendee (Cleveland, OH)
    2010 Cruisefest Attendee(Effingham, IL)
    2011 CruiseFest Attendee(Effingham
    , IL)

    Formerly owned Corvettes: 1964 coupe, 1994 coupe, 2001 coupe



  2. #347
    Blue Bullet Blog-The C6 Ownership Experience Tuna's Avatar
    Join Date
    Mar 2003
    Location
    Mustang, OK
    Posts
    3,584
    Post Thanks / Like
    Rides
    1

    Default

    Rattles? I'm not hearing any in my 427 Vert and it's got 49,000 miles now. Then again, I don't always wear my hearing aids.

    I ought to drive out to California and have you check it out for me.

    Has it warmed up enough to put that new Katech engine to limits yet?
    Tuna
    New avatar - my latest novel
    Antiques To Die For



  3. #348
    Member
    Join Date
    Sep 2003
    Location
    Charlotte
    Posts
    150
    Post Thanks / Like
    Rides
    0

    Default

    Okay Hib, you have had the Katech engine for a few weeks now and it should be well broken in. Have you had an opportunity to make a fuel mileage run on the road, town, and combined? Not that anyone with that engine should care about fuel mileage. Also, how is the idle compared with the original cam now that it has a few miles? Thanks for the Katech catalog. It brought back memories of getting the Sears Christmas catalog when I was a kid. Same emotions, same wants, same dreams, different Santa Claus.
    NCM Life Member #300
    NCM Founding Member #615
    NCM Ambassador
    NCRS Member #10460
    NCM 2003 Caravan Captain-SoCal
    NCM 2014 Caravan National Chair
    NCM Board of Directors

  4. #349
    Technical Writer for Internet & Print Media
    Join Date
    Jan 2001
    Location
    CenCoast CA
    Posts
    11,745
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by Tuna View Post
    Rattles? I'm not hearing any in my 427 Vert and it's got 49,000 miles now. Then again, I don't always wear my hearing aids.

    I ought to drive out to California and have you check it out for me.

    Has it warmed up enough to put that new Katech engine to limits yet?
    Quote Originally Posted by Paul T View Post
    Okay Hib, you have had the Katech engine for a few weeks now and it should be well broken in. Have you had an opportunity to make a fuel mileage run on the road, town, and combined? Not that anyone with that engine should care about fuel mileage. Also, how is the idle compared with the original cam now that it has a few miles? Thanks for the Katech catalog. It brought back memories of getting the Sears Christmas catalog when I was a kid. Same emotions, same wants, same dreams, different Santa Claus.
    Sorry to take so long to reply. I know 3 ½ months without posting to this Blog has raised some questions.

    So far, the "Street Attack LS7" I had Katech put into the Blue Bullet has not met my expectations.

    If you saw the video footage Katech taped with me just before I left their shop, know that, at the time, I was all jacked-up on the idea that I now had a Katech engine in my Corvette. Perhaps my enthusiasm was a bit premature because, to date, the costly Street Attack LS7 and its installation has not brought the additional enjoyment to driving the Blue Bullet I hoped it would.

    Why?

    1) The air conditioning compressor belt kept jumping grooves any time I ran the motor over about 6000-rpm. Each time, I had to jack up the car, retract the tensioner back and reposition the belt. If I didn't, after a few runs over 6000, the A/C drive system would chew up the belt.

    2) The engine controls calibration was way off. The engine idle was: too fast, unstable and under certain conditions, prone to stalling. Low speed/light load drivability was marginal at best. The wide-open throttle air:fuel ratio was way rich, like...we're talking black smoke, here. The engine is in detonation at mid-to-high rpm and, as a result, the engine controls were dialing in a lot of "knock retard.

    3) The engine has a voracious appetite for oil. It started out using about a quart every 2000 miles but has deteriorated to a quart about every 100-200 miles. In 4873 miles the engine has used 13-quarts of oil.

    Eventually, I fixed #1 and made a lot of progress on #2, but the oil use persists. At this point, after discussion with Katech's President, Steve Spur and hearing his interest in standing behind his company's product, I'm going to ship the car back to Michigan so Katech can diagnose the problem and, if necessary, pull the engine for repairs.
    Hib Halverson

  5. #350
    Member LLC5's Avatar
    Join Date
    Sep 2004
    Location
    Wa.
    Posts
    1,958
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by Hib Halverson View Post
    Sorry to take so long to reply. I know 3 ½ months without posting to this Blog has raised some questions.

    So far, the "Street Attack LS7" I had Katech put into the Blue Bullet has not met my expectations.

    If you saw the video footage Katech taped with me just before I left their shop, know that, at the time, I was all jacked-up on the idea that I now had a Katech engine in my Corvette. Perhaps my enthusiasm was a bit premature because, to date, the costly Street Attack LS7 and its installation has not brought the additional enjoyment to driving the Blue Bullet I hoped it would.

    Why?

    1) The air conditioning compressor belt kept jumping grooves any time I ran the motor over about 6000-rpm. Each time, I had to jack up the car, retract the tensioner back and reposition the belt. If I didn't, after a few runs over 6000, the A/C drive system would chew up the belt.

    2) The engine controls calibration was way off. The engine idle was: too fast, unstable and under certain conditions, prone to stalling. Low speed/light load drivability was marginal at best. The wide-open throttle air:fuel ratio was way rich, like...we're talking black smoke, here. The engine is in detonation at mid-to-high rpm and, as a result, the engine controls were dialing in a lot of "knock retard.

    3) The engine has a voracious appetite for oil. It started out using about a quart every 2000 miles but has deteriorated to a quart about every 100-200 miles. In 4873 miles the engine has used 13-quarts of oil.

    Eventually, I fixed #1 and made a lot of progress on #2, but the oil use persists. At this point, after discussion with Katech's President, Steve Spur and hearing his interest in standing behind his company's product, I'm going to ship the car back to Michigan so Katech can diagnose the problem and, if necessary, pull the engine for repairs.


    Ouch! Sorry to hear that.

    Katech does not allow only changing the oil filter and not the oil do they?

    I'm not even trying to infer that this is your problem with so few miles on the engine, I was just wondering what their oil change mileage and procedures are.
    Master Technician

    25+ year ASE Master Certified Tech

    22+ year Honda Master Tech

  6. #351
    Blue Bullet Blog-The C6 Ownership Experience Tuna's Avatar
    Join Date
    Mar 2003
    Location
    Mustang, OK
    Posts
    3,584
    Post Thanks / Like
    Rides
    1

    Default

    Well, that sucks.
    Like you, I would have thought Katech had this upgrade down. Guess not.
    At least they want to make it right.
    Tuna
    New avatar - my latest novel
    Antiques To Die For



  7. #352
    Technical Writer for Internet & Print Media
    Join Date
    Jan 2001
    Location
    CenCoast CA
    Posts
    11,745
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by LLC5 View Post
    Ouch! Sorry to hear that.
    Yeah...I'm bummed. I stopped driving the car because it's using so much oil, but then...that gives me a chance to give our 2004 Z06 some TLC and put some miles on it.

    Katech does not allow only changing the oil filter and not the oil do they?
    I'm not even trying to infer that this is your problem with so few miles on the engine, I was just wondering what their oil change mileage and procedures are.[/QUOTE]

    Katech did not specify and special oil change interval but they did tell me to switch from a 5W40 to a 5W30 oil because of their high-volume pump. My oil change interval with a premium synthetic such as Driven Racing oil or Red Line is 150% of oil life with a filter change every 50%. I changed the oil once time about 2500 miles after I had them do the motor. That was to switch from 5W40 to 5W30. Since then I've only driven a couple thousand miles.

    Katech and I are in discussions now about the logistics of getting the car back to their facility in Clinton Township Mi.
    Last edited by Hib Halverson; 04-19-18 at 01:56 PM.

  8. #353
    Member LLC5's Avatar
    Join Date
    Sep 2004
    Location
    Wa.
    Posts
    1,958
    Post Thanks / Like
    Rides
    0

    Default

    Interesting, I thought they might have a vigorous LOF timetable.

    Good luck with it, hope it all turns out well.
    Master Technician

    25+ year ASE Master Certified Tech

    22+ year Honda Master Tech

  9. #354
    Technical Writer for Internet & Print Media
    Join Date
    Jan 2001
    Location
    CenCoast CA
    Posts
    11,745
    Post Thanks / Like
    Rides
    0

    Default

    The Blue Bullet is back at Katech. I shipped the car there using Pilot Transport about which I cannot say enough good things. I dealt with Angie Makin in Pilot's main office in Brighton Michigan along with Joe Sanchez, the truck driver. Back on Saturday the 12th a Pilot tractor pulling a 53-footer rolled up outside.

    I pulled the BB out of the shop, while Joe unloaded a C7 he was going to drop later in the day over in Los Angeles, then he drove my car onto the top level and all the way to the front. Then he stuck the C7 back in behind my car.

    He was on his way about 45-minutes later. Pilot Transport knows their stuff as far as moving collector and special interest cars around. Their price beat the other two I had quotes from, Reliable Carriers and Passport.


    If you need to have a car transported, give Angie Makin a call at 248-486-3701 or email her at amakin@unitedroad.com. Thanks to Pilot driver Joe Sanchez for getting my car to Michigan safely.

    The car arrived in Pilot's yard in Brighton on Friday the 18th and Katech picked it up there on the following Monday.

    767-48-jpg

    Katech emailed me yesterday to say that they will be starting work on the car late next week.

    Obviously, I'll be very interested in what they find.

    Once Katech fixes the engine, my plan is to, once again, fly to Detroit, pick-up the car and drive it back to California and, in the process, do some prerun work for the 2019 Corvette Caravan. Only this time, I'm going to drive as far as St. Louis then do an oil check. If the engine has used too much oil, I'll turn around and go right back to Katech.

    Last edited by Hib Halverson; 05-25-18 at 10:47 PM.

  10. #355
    Technical Writer for Internet & Print Media
    Join Date
    Jan 2001
    Location
    CenCoast CA
    Posts
    11,745
    Post Thanks / Like
    Rides
    0

    Default

    Katech had the car a month then contacted me saying, based on a borescope session and an exhaust backpressure test, they think the bores are worn mirror smooth and the cats are plugged. On Tuesday 26JUL they told me it would be another two weeks before they have the engine out, disassembled, inspected and measured. Then they will email me a full report.

    I'm disappointed that this process is taking longer than I thought, but, it is what it is.
    Last edited by Hib Halverson; 06-28-18 at 09:16 PM.

  11. #356
    Technical Writer for Internet & Print Media
    Join Date
    Jan 2001
    Location
    CenCoast CA
    Posts
    11,745
    Post Thanks / Like
    Rides
    0

    Default

    Driveline Lube Changes
    Before I shipped the Blue Bullet to Katech, I did a change of rear axle and transmission lubricants. The car had been driven 38358 miles in five years since the last fluid change, so it was definitely time to change those fluids.

    For over two decades, I've used Red Line Heavy Shockproof Gear Oil in Corvette drive axles and SuperLight Shockproof in '89-up Corvette six-speed manual transmissions. My reasons for this are improved durability, lower lubricant temperature and, with the transmission, improved shift feel.

    Red Line's Shockproof Gear Lubricants are unique because they have a combination PAO and ester base stock in a very soft gel form. The word "gel" might have some people thinking "Jello" and, indeed, Jello is one kind of gel. Other kinds of gels are bearing and chassis grease, RTV silicon sealers and calks, some toothpastes and hair care products as well as “thick” liquids like dishwashing soap and liquid glues.

    The gel-base technology Red Line uses makes for some desirable characteristics in a transmission lube. It offers high viscosity at high temperatures allowing it to cling to rapidly rotating gears which greatly reduces metal-to-metal contact between gear teeth. Shockproof has lower viscosity when cold for acceptable shift feel. It has lower fluid friction for less power loss, lower oil temperature and slightly better fuel economy.

    ShockProof lubricants' greater viscosity offers as much as 250% higher load-carrying capacity. Its up to 40% less internal fluid friction means parasitic torque loss is reduced along with further temperature decreases. Heavy Shockproof viscosity is about that of a 75W250 gear oil, but has the lower fluid friction of a 75W90. Heavy Shockproof also works well in Corvette drive axles having clutch-type limited slip differentials. In most cases, no friction modifier additive is necessarily. LightWeight Shockproof is about a 75W140 gear oil, but has the lower internal friction of an SAE30 engine oil. LWSP is good for older Corvette manual transmissions such as Muncie M20/M21/M22 and Warner T10 and Super T10 four-speeds and the gearbox section of the Nash 4+3 in '84-'88 C4s. SuperLight Shockproof is about a 70W90, but has the lower fluid friction of an automatic transmission fluid, which, coincidentally, is the recommended lubricant for the Tremec T-56 and TR-6060 used in a C5s and C6es along with other GM high-performance manual trans applications and that's why I use it in those transmissions.
    0000241_heavy-shockproof_415-jpeg0000281_lightweight-shockproof_415-jpeg0000269_superlight-shockproof_464-jpeg
    Another unique feature of Shockproof gear oils is they use a "Complex Calcium Technology" (CCT) extreme pressure (EP) additive rather than the sulfur-based EP additives in conventional gear oils. The CCT extreme pressure additive provides superior protection from metal-to-metal contact during shock loading and is one reason most Top Fuel dragsters and Nitro Funny Cars have Red Line Heavy Shockproof in their rear axles. Another racing application for which the Shockproof gear lubricants provide a significant durability margin is off-road racing where violent changes in loading when the racers get airborne cause extreme driveline shocks. Not only is Shockproof’s CCT a better EP additive under shock loads, but it, also, makes gear systems operate more quietly and has excellent detergent and anti-corrosive properties.

    Improved reliability and durability in high-performance use is the primary benefit of the ShockProof family of gear lubricants. Given proper clutch operation, Shockproof gear lubricants, also, can improve shift at both operating temperature and cold, "start-up" temperature. Due to less internal friction, When using Shockproof, peak oil temperature reductions between 25°F and 75°F are common in severe duty applications.

    I drained the lube out of the rear end and trans, saving samples of each to send out to Blackstone Laboratory for analysis then replaced their drain plugs. I filled the drive axle with Heavy Shockproof and the transmission with SuperLight Shockproof.


  12. #357
    Member LLC5's Avatar
    Join Date
    Sep 2004
    Location
    Wa.
    Posts
    1,958
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by Hib Halverson View Post
    Katech had the car a month then contacted me saying, based on a borescope session and an exhaust backpressure test, they think the bores are worn mirror smooth and the cats are plugged. On Tuesday 26JUL they told me it would be another two weeks before they have the engine out, disassembled, inspected and measured. Then they will email me a full report.

    I'm disappointed that this process is taking longer than I thought, but, it is what it is.

    If those cats are plugged, I would want a fairly detailed explanation as to why.
    Master Technician

    25+ year ASE Master Certified Tech

    22+ year Honda Master Tech

  13. #358
    Technical Writer for Internet & Print Media
    Join Date
    Jan 2001
    Location
    CenCoast CA
    Posts
    11,745
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by LLC5 View Post
    If those cats are plugged, I would want a fairly detailed explanation as to why.
    In my last email to them I asked then to cut the front off one of the cats with a chop saw then send me the pics. I think it should be pretty simple to decide of the restricted cats are due to a melted substrate or burnt oil residue.

  14. #359
    Member LLC5's Avatar
    Join Date
    Sep 2004
    Location
    Wa.
    Posts
    1,958
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by Hib Halverson View Post
    In my last email to them I asked then to cut the front off one of the cats with a chop saw then send me the pics. I think it should be pretty simple to decide of the restricted cats are due to a melted substrate or burnt oil residue.

    Yeah, it should be fairly obvious with no cylinder cross hatch. Melted substrate would be a tuning issue, and oil residue would be a mechanical issue.

    What is Katech's reasoning for no cross hatch in the cylinder bores? Seriously odd.......

    I have pulled apart many 200K plus mileage engines with fair to good cross hatch still visible. Hopefully they will give you an honest answer.
    Master Technician

    25+ year ASE Master Certified Tech

    22+ year Honda Master Tech
    Likes catbert liked this post

  15. #360
    Technical Writer for Internet & Print Media
    Join Date
    Jan 2001
    Location
    CenCoast CA
    Posts
    11,745
    Post Thanks / Like
    Rides
    0

    Default

    They have not offered a reason why the bores are toast. To date all they've said is what might have caused it: excessively lean or excessively rich air:fuel ratios. They did not mention faulty bore prep but, right now, I think they screwed that up.

    It's going to be another week before they've got the engine disassembled and the problem fully diagnosed.
    Last edited by Hib Halverson; 07-03-18 at 06:26 PM.

Page 24 of 24 FirstFirst ... 142021222324

Similar Threads

  1. Corvette Parts Blog
    By Hib Halverson in forum C3 General Discussion
    Replies: 3
    Last Post: 12-24-10, 08:11 AM
  2. Question: ZR1 vs. LT1 Ownership?
    By Donne Trav in forum C4 Corvette ZR-1
    Replies: 7
    Last Post: 03-15-10, 12:27 AM
  3. Blog: GM should (still) kill the Corvette
    By Rob in forum GM & Auto Industry News
    Replies: 29
    Last Post: 01-22-10, 11:04 AM
  4. Prior Ownership
    By gene2661 in forum C4 General Discussion
    Replies: 1
    Last Post: 04-05-08, 03:23 PM
  5. My Blog
    By jacob9582 in forum C4 General Discussion
    Replies: 8
    Last Post: 05-11-05, 10:54 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •