Bleh, throwout bearing replacement, questions while i'm already there. (Page 3/3)
zkhennings NOV 18, 01:30 PM
I am in the midst of a built LZ9 swap right now, you can find my build thread “85 Notchie Build” in the tech section. I opted to delete the VVT and run a 3400 comp cams cam from WOT tech using the bearing spacers and SBC cam bearings. If you want to keep the motor stock I’d suggest getting a low mileage engine, I intended to keep mine stock but at 160,000 miles the cross hatching in the cylinder walls was very poor even though the engine seemed taken care of well enough, I also got one from an Uplander so it may have had a harder life lugging a mini van full of people around. If I did it again I would get one from a Lucerne with low mileage so I could use the stock alternator and location with a simple trimming of the hinge box. Oil fill neck will hit decklid so you will need a solution for that. I also added in an offset crossmember so I could use the stock LZ9 engine mount and oil filter location, if you don’t want to chop up the cradle you will need a solution for the oil filter and make a custom engine mount to line up with the factory cradle location. My thread is pretty detailed if you look through it. With the Isuzu the factory slave cylinder location fouls the exhaust crossover, you would need to make a custom one if you want to use the factory headers which work fine in the engine bay otherwise. Or go f23 right away and be done with slave cylinders. Also you will need a FPR since it is a return-less system at the rail, though I have seen that a corvette fuel filter has the regulation built in and can work with the motor. I opted for an Aeromotive unit so I can adjust it. Should be fun to drive when done though! Hoping for at least 300hp with all the mods.
A_Lonely_Potato NOV 27, 08:12 PM

quote
Originally posted by fierofool:

I saw that, too. The 85 Duke did come with an Isuzu, but because the 85 also had a 4-speed, there are frequent incorrect listings. That's why I sometimes use other years for ordering parts. The Isuzu throwout bearing had the wire retainer. The 4-speed Muncie had the posts, and the 5-speed Getrags had two flats that extended on either side of the bearing.



been sidetracked with stuff, and work has been having me drained at the end of the day, so things have been slow. sorry for the delayed response. got my new LUK 04088 clutch today, and yesterday i got my engine mostly back together after replacing gaskets and such. finished that up just a bit ago today.

anyhow, i waited to order my TOB because i am silly and didn't want to spend that much money in a single day(clutch kit, TOB, gasket set). tonight while paroosing around looking at bearings, i noticed the wire retainer for the Isuzu TOB is enclosed. my clutch forks have single pinholes, and i don't see how they would interface with the bearing retainer.





unless im not seeing things correctly, it looks to me like i need to get another one of these bearings with this style retainer clip




zkhennings, wow, thats a lot of fantastic information! i have since decided to just put my old motor back in, and wait until the spring when i have more time, play money, and knowledge of what all i need. thank you for bringing your thread to my attention
A_Lonely_Potato JAN 15, 10:29 PM
Soooo, im back. had a bit of a hiatus since i shot myself with a nailgun and broke my 2nd metacarpal! Today i felt good enough to get some work done.

Got my old front cradle bushings out, that was really annoying. Jury rigged a press with a clamp and some junk laying around. Even with that i wound up torching the walls to melt it a bit to get it free.



And as you can see in that, i got the new ones in the same way. The sleeve that the bushing goes into was pretty rough and rusted, so i dremel-ed them smooth and used grease to get them in. Picked up some water repellent lube for the inner bushing sleeve and got those in too.

When removing the cradle I had to cut through one of the bolts as it was very seized. I may have already posted about that, i honestly can't remember as i type this out.



Summary, I got the new clutch and pressure plate in, also with my flywheel getting resurfaced. Got the right TOB installed, and I (hopefully) fixed my oil leak from my intake. Found out my firewall side exhaust manifold was not secured at all, cyl 4 both nuts were backed off, cyl 6 one was backed off, and the other was GONE cyl 2 was good and tight though somehow. I think i might have used too much anti seize putting them on initially lol. Hoping to power through putting things all back together. Next step will be getting the engine and cradle out of the garage and back over to the car, then installation!

For those who want to see my nailed hand, heres a linky-doo