Bleh, throwout bearing replacement, questions while i'm already there. (Page 2/3)
Patrick NOV 11, 07:19 PM

I don't know if you've mentioned it before, but you've got a nice aftermarket exhaust system on there... although it might be a good idea to add some header wrap (or a heat shield) to the naked Y-pipe to try and cut down on heat being thrown off towards your coil and ICM.
fierofool NOV 11, 07:48 PM
The V6 clutch disk is 9 1/8 inch diameter. The Isuzu clutch disk is 8 1/2 inch diameter. Rock Auto is the only place I can find where you can buy the pressure plate, clutch disk, and release bearing all piecemeal. Of course, you could buy a clutch kit for a V6 and buy an additional release bearing for an Isuzu. You would have to weigh which is more economical for you.
A_Lonely_Potato NOV 11, 07:49 PM
thanks patrick, should have seen how horrible it was before i welded up all the horrendous joints. oh wait, found some pictures.



i swear whoever made this, tried to learn how to weld by making these headers.



I have been wanting to wrap the rest of the Y pipe, but its a pain with the engine in the car....

guess i should get onto that
A_Lonely_Potato NOV 12, 06:46 PM

quote
Originally posted by fierofool:

The V6 clutch disk is 9 1/8 inch diameter. The Isuzu clutch disk is 8 1/2 inch diameter. Rock Auto is the only place I can find where you can buy the pressure plate, clutch disk, and release bearing all piecemeal. Of course, you could buy a clutch kit for a V6 and buy an additional release bearing for an Isuzu. You would have to weigh which is more economical for you.



got TOB off oreillys, was cheaper than i could get from RA. My clutch disk is about 9 1/16 diameter, so it sure seems to be the v6 disk. I'm really at the point where i need to decide if this engine is going back in, because if its not im gonna need a different flywheel/pressure plate/clutch disk. thanks again.
fierofool NOV 12, 10:10 PM
Yeah, at 240 HP you're probably going to need something other than an Isuzu transmission, too.
A_Lonely_Potato NOV 16, 09:14 PM

quote
Originally posted by fierofool:

Yeah, at 240 HP you're probably going to need something other than an Isuzu transmission, too.



lol, probably. maybe i'll just abuse the isuzu till it pops, then go f23


development! TOB got here today. and it doesn't look right...

well, actually it does, thats the weird part. so here is the new bearing(left) compared to the one that was on my car(right)







doing a bit of looking, come to find out what i was sent is the correct bearing for the isuzu, but the one on my car doesn't look like its for a fiero of any kind! whats really odd is the oreillys listing for part 614108 visually matches the one that was in my car, but i was sent the isuzu bearing.



new one didn't come with the retainer spring either. thats another weird thing, the old one looks like it belongs with the isuzu bearing somehow, but it doesn't fit correctly. so i gotta source a new spring, any leads on that would be helpful.
fierofool NOV 16, 09:32 PM
You received the wrong bearing. It should have the retainer clip attached.
Autozone 1987 Fiero 2.5 manual transmission https://www.autozone.com/dr...sIgnoreVehicle=false
Rock Auto 1987 Fiero 2.5 manual transmission. Most of them have the wire retainer clip. Those that don't won't work on the Isuzu release fork.
https://www.rockauto.com/en...release+bearing,1968
O'Rielly 1987 Fiero 2.5 manual transmission.
https://www.oreillyauto.com...utch+release+bearing
NAPA 1987 Fiero 2.5 manual transmission. See Important Information: w/ 5 Speed Isuzu M/Trans
https://www.napaonline.com/...042?impressionRank=1

There are times when you must order parts for a different year Fiero than the year you have. 85 and 86 parts catalogs in most parts stores have some inaccuracies, especially when it comes to the clutch and its hydraulics. The 86 is the worse year because it had all 4 Fiero transmissions available. It had a 4-speed in early 86 V6's, a Getrag in late year 86's, and the Isuzu in all 2.5 equipped cars. For that reason, when I want something for a 4-speed, I order it for an 85 because it only had a 4-speed manual available. If it's for either 5-speed, I order for an 87 if it's a V6 or an 85 if it's a Duke.

[This message has been edited by fierofool (edited 11-16-2022).]

fierofool NOV 16, 09:49 PM

quote
Originally posted by A_Lonely_Potato:


lol, probably. maybe i'll just abuse the isuzu till it pops, then go f23


.



I'll give you till you hit 2nd gear.

A_Lonely_Potato NOV 16, 10:57 PM
i'm seeing both the one that was on my car, and the new one i received as the "correct" bearing on rockauto. both are listed for MT2. Were there 2 different bearings for the isuzu TOB?


quote
Originally posted by fierofool:

There are times when you must order parts for a different year Fiero than the year you have. 85 and 86 parts catalogs in most parts stores have some inaccuracies, especially when it comes to the clutch and its hydraulics. The 86 is the worse year because it had all 4 Fiero transmissions available. It had a 4-speed in early 86 V6's, a Getrag in late year 86's, and the Isuzu in all 2.5 equipped cars. For that reason, when I want something for a 4-speed, I order it for an 85 because it only had a 4-speed manual available. If it's for either 5-speed, I order for an 87 if it's a V6 or an 85 if it's a Duke.




the one i ordered was supposed to be for an 85 duke, which should have come with the isuzu, correct?
fierofool NOV 17, 08:54 AM
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.