Christmas present & more Q's

[caninelver]

I have the goodyear gs d3s and love them. They stick to the road so hard that if there is the smallest groove in the pavement that the front tire try to follow it. That took some getting used to, especially at slow speeds when the wheel trys to turn itself. They are a little loud on some roads and less so on others. It must have to do with the type of pavement. When I got mine about a year ago they could not be found on tirerack or even locally. A GM dealer called goodyear and had to have them shipped from the factory. I would think supply would have caught up with the demand by now.
See you in BG in June.

[tomtom72]

Hi Denny,

Thanks for the review on the D3's! I kinda trust GY as they were the ones to do the OE tires. I've read the reviews and have had other owners tell me how pleased they were with them. I think those are the choice i'm going with. I found them on the rack and all I need now is to contact some of their recommended local installers and hook it all up. This may turn out better than I expected cause it seems their installers take drop shippments.
Thanks, Tom

[SSTibet]

CAGS is truely a PITA... You do not actually need the CAGS eliminator. You can just unplug the 1 to 4 solenoid in the transmission and cover the ends with electric tape. The eliminator is a nice looking part and makes it tidy after the modification.

[FrankUrbinati]

F1Super Car tires. Much better and alot more expensive than the F1GSD3's. My opinion .

[tomtom72]

Hi Frank,

Okay now I gotta go back and look up the threads on tire tests. I thought the GS-D3's were a direct replacement for the Eagle ZR's that came on a ZR-1?? I have heard of the F1 SuperCar tire but was not aware that it was intended for the C4? Forgive my ignorance it has been awhile for me, long time between vettes and lots of vetteless yrs. All this is new to me, but I'm trying to get caught up. Just to give a measure of how far behind I am, my 72 LT-1 had a set of pirelli ( sp? ) CN36's in VR ! Now that's old school!!

Tom

[FrankUrbinati]

Hi Tom

I have a set of GSD3's on the 91 and F1S/C's on the 93. Big difference. The only down side to the S/C's is the price and they are a bit noisey on certain roads. The GSD3's are better in the rain. Both tires are direct replacement's for the ZR1. I beleive Hib has a great write up on both .

[tomtom72]

Hi Frank,

Thank you for the help! I looked up the threads from Mr. H & yes it's as you say about the intended applications. It's nice to have this site & the people here or I would be wandering around in the dark! I kinda lean toward wet performance as hydroplaining is not my idea of fun and the price is a bit steep on the F1SC's. The wet performance was the reason for the CN36's on my 72, they were patterened after Pirelli's rain rallye tire.

I have another question. Is there a secret to dismounting a tire on a LTPWS rim? Is there a specific place you don't want to stick the tire bar? Or is it just luck that you don't hit the sensor attached to the hose clamp? The reason I ask is that 90 ZR-1 rims seem hard to come by in the aftermarket. If I find that my rubber is OE I would like to save the tire/wheel intact and just go get new wheels & tires. Thanks, Tom

[Wegone]

Tom.


There is a decal on the wheel this is where the LTPWS is located on the inside. Have them break it down half way and remove the sensor before removing the tire all the way

Steve

[tomtom72]

Hi Steve,

Thank you! I should have figured there would be some tell-tail from GM. I got my shop manuals late yesterday & started reading some selected sections. I ran thru one section about the sensor location, supposed to be opposite the valve stem. I didn't see anything mentioned about the decal, kinda figures as my mechanic friend used to say not every thing is in the shop manuals cause they're not written for beginners! Man is this car more complicated than my 72!! About the only thing that has not changed is that the car is still a jig-saw puzzel, both mechanically & electrically now. I remember on my 72 most seemingly simple things involved moving other things out of the way before you get to what you wanted to work on in the first place. I thought at first my 72 was a complicated set of interlocking pieces, this car is way beyond that one! Whose idea was it to hide plugs 7 & 8? Looks like I'm going to Sears with a list of tools just for this car! Good thing I have all winter to eye ball this beast, maybe by spring I'll have learned something!

Tom

[Wegone]

Tom,

Plug 8 is the hard one..But on the ZR-1 you have a two part air box just so you can get to plug 8. There is a post on changing plugs on the zr1 net that is very good...check it out.

[tomtom72]

Thank you Steve! I didn't think of ZR1net & I'm a member1 Tom

[tomtom72]

Hi guys,
I have a question. Where would I find the wheel offset measurements for a 90 ZR-1? I looked thru both owner's manuals and I've looked at the wheel section of the GM service manual and I can't find those #'s. It seems that when I look at reproduction wheels some companies list two front and two rear offset #'s. Also some wheel Cos. seem to list a range for the offset on the product they offer. I know I don't know enough about this, and the GM Ser Man says the wrong wheel can damage the Fr & R wheel bearings. Can anyone point me in the right direction to learn what I need to know?

Thanks, Tom

[FrankUrbinati]

http://zr1netregistry.com/ZR1_suspension.htm

[tomtom72]

Thank you Frank! I have alot to learn & I'm thankful for all the help.

[tomtom72]

Hi All,
This is a issue I don't know anything about: Scan Testers, Vetronix Tech 1A to be specific.
Two Questions:
1.) If you see in a ad for a used Vetronix Tech 1A the term "includes GM 1984-1996 cartridge" is that the software to talk to a ZR-1's ECM?
2.) If you need to buy software will Vetronix sell to a 'shade tree' guy or is this "for sale to the trade only" merchandise?
The reason for the Q's is I am giving serious thought to buying a Tech1A to help me with my ZR-1. Thanks for any light thrown my way! Tom