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| Flywheel and 5-Speed Getrag Questions... (Page 1/3) |
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82-T/A [At Work]
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OCT 05, 08:04 AM
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Fiero family... long story short, my Fiero has been in storage for almost a decade, where it will probably sit for another decade. But while parts are still available, I'd like to buy what I need for when the time comes. Hoping you guys can help me decide what I need to buy:
5-Speed Getrag: I purchased an original 86-87 Fiero 5-Speed Getrag w/ 57k miles on it from forum-member Blacktree. Transmission is immaculate, and is spotless (not even grease on the case). Other than swapping out the oil, what else would you recommend replacing before it goes back in the car? Are there any modifications you would do to it while it's out? I thought I saw the Fiero Store had some kind of bearing kit that you can append to the outside to protect the inner bearing rings? Looking for a possible run-down / list of parts I can / should buy. I assume seals and what not. Note: when I put it in storage, I filled up the transmission and put caps in the holes to keep the oil in.
Fidanza Flywheel: I'm looking at getting a new flywheel to go with my 5-Speed. My Fiero was originally an automatic, but I'll be converting it to a 5-Speed (everything else is done, and all parts are new). As it's been years since I've even looked at this stuff, I seem to recall there was a change needed... something about a crank being internally versus externally balanced. I installed the ARI 3.1 Stroker Kit, and I went with .040 overbore pistons into my 1987 V6. I cannot remember, but in the act of doing this, would it have changed my engine from being externally balanced to internally balanced? The reason I ask is... I'm thinking of getting the Fidanza aluminum flywheel, and I think being internally balanced is a requirement. I *believe* I meet this requirement... but just want to make sure based on my configuration. Finally... what do you guys think of the Fidanza, is that the way to go?
Clutch Slave: My car is currently set up with a new clutch master cyl, brand new stainless clutch line, and then it's capped off in the engine bay. Is there a consideration that I should go with a hydraulic clutch bearing, or do I stick with the hydraulic slave cyl and the clutch fork do-dad? Any benefit to one over the other?
Thank you!!!
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Patrick
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OCT 05, 07:24 PM
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| quote | Originally posted by 82-T/A [At Work]:
what do you guys think of the Fidanza, is that the way to go?
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You've got to read This post. Very important information from fieroguru regarding "aluminum creep" is provided there.
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82-T/A [At Work]
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OCT 06, 10:41 PM
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| quote | Originally posted by Patrick:
You've got to read This post. Very important information from fieroguru regarding "aluminum creep" is provided there. |
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Thanks Patrick... so it looks like everyone is either using thin but large washers to help spread out the tension on the aluminum. Is there a plate that can go over it that helps spread it out?
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fierosound
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OCT 06, 11:48 PM
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Patrick
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OCT 07, 12:25 AM
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| quote | Originally posted by 82-T/A [At Work]:
... so it looks like everyone is either using thin but large washers to help spread out the tension on the aluminum.
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I think the critical components are the steel bushings mentioned by fieroguru pressed into the aluminum flywheel bolt holes.
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lou_dias
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OCT 07, 09:13 AM
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I have a Fidanza flywheel in my 3.4 Formula and 3.4 87 GT. Works for me... My 87 was fully rebuilt (from a 3400 block) and balanced.
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Raydar
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OCT 07, 12:28 PM
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If you've got a 3.1, it is almost certainly internally balanced. The flywheel should work fine. I've never used one, however, so I can't add anything else.
The hydraulic release bearing is nice, but it would likely be a bear to adapt to your earlier Getrag, if it could be done at all. (I would buy Rodney's slave.)
IMHO, the "support bearings" that are sold are pretty much a bandaid, used to help out Getrags with excessive play in the differential bearings. I wouldn't use them. This is just my opinion. I welcome discussion on this, since I've never used them.
If you want to check your differential bearings, plug an axle (or just the "tulip") into each side of the diff. Shake one of them up and down. The up and down movement should not be transferred to the other side.[This message has been edited by Raydar (edited 10-07-2019).]
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Blacktree
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OCT 07, 10:23 PM
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That's odd. I don't remember selling a Getrag transmission. Anyway...
The issue with those axle support bearings is they make score marks in the casing during installation. So once you install them, you can't go back to stock axle seals. Because they'll leak.
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82-T/A [At Work]
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OCT 08, 08:30 AM
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| quote | Originally posted by Raydar:
If you've got a 3.1, it is almost certainly internally balanced. The flywheel should work fine. I've never used one, however, so I can't add anything else.
The hydraulic release bearing is nice, but it would likely be a bear to adapt to your earlier Getrag, if it could be done at all. (I would buy Rodney's slave.)
IMHO, the "support bearings" that are sold are pretty much a bandaid, used to help out Getrags with excessive play in the differential bearings. I wouldn't use them. This is just my opinion. I welcome discussion on this, since I've never used them.
If you want to check your differential bearings, plug an axle (or just the "tulip") into each side of the diff. Shake one of them up and down. The up and down movement should not be transferred to the other side.
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Yes... it's a 3.1 stroker kit. Original 2.8, but with a 3.1 crank and rods.
Thanks!!!
| quote | Originally posted by Blacktree:
That's odd. I don't remember selling a Getrag transmission. Anyway...
The issue with those axle support bearings is they make score marks in the casing during installation. So once you install them, you can't go back to stock axle seals. Because they'll leak. |
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Bought is a strong word... I think more like let myself into your garage and took it!
Hahah, sorry... damn, I thought it was you. Maybe it was Blackrams... sigh. Oh well. But it was a spectacular 5-Speed. Came bolted to the inside of a crate, immaculate.
Thanks for the info... I appreciate it. I won't order those then. Sounds like it's something we only need if it's worn out.
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Larryinkc
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OCT 08, 09:18 AM
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| quote | Originally posted by 82-T/A [At Work]:
Bought is a strong word... I think more like let myself into your garage and took it!
Hahah, sorry... damn, I thought it was you. Maybe it was Blackrams... sigh. Oh well. But it was a spectacular 5-Speed. Came bolted to the inside of a crate, immaculate.
Thanks for the info... I appreciate it. I won't order those then. Sounds like it's something we only need if it's worn out. |
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GM made an axle support bearing kit for the passenger side of the TH 125 transmissions. I have about 5,000 miles on the ones in my Getrag and all is still good. The differential bearings didn't have excessive play but the seals still leaked. Here's the thread.
http://www.fiero.nl/forum/Forum2/HTML/140014.html
I also have the Fidanza aluminum flywheel on a Series III 3800 SC motor, about 7,000 miles since the install. I did the steel bushings with hardened steel flat washers and all is good there too.
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