3500 swap into 86 Fiero questions

[NateD4]

I went to a ceramic clutch because I didn't get very much life out of a conventional clutch. I think I had over 40K on the ceramic. I attribute it to being on/off. There really isn't a lot of clutch slipping required once you get the hang of driving a ceramic clutch.

For my F40 swap I opted for a Tilton 7.25" dual disc rally clutch. Mainly to handle the torque I plan on making and because they are fairly inexpensive.

I'm not sure how long this transmission will last with that clutch... but the F40s aren't that expensive at the moment.


As far as needing a dual mass. I've heard from several sources they aren't required. After thoroughly inspecting the stock G6 flywheel and opting to not use it for a bunch of reasons one of which is the torque limiting ring, the second the weight (it weights upward of 25 lbs).

I think a lighter clutch/flywheel assembly with lower inertia will ease the problems with harmonics since the frequency mode is higher given the forcing function input. But I guess I'll see. I actually half expect to blow a tranny up on the dyno when I crank the boost up... though there are videos of the F40 transmitting almost 500 HP (with no shock loading)....

[NateD4]

Also forgot to ask. Did you break the previous tranny in? The first several thousand miles should be lightly driven until the gears are worn in to each other. I'm contemplating sending my tranny out to have it REM microfinished to help eliminate the possibility of wearing the tranny out on early dyno testing....

[neophile_17]

One of the first things I did was remove the fiberglass insulation. I didn't replace it with anything and I've never looked back. This includes a summer where the car inadvertently became my daily driver. It had no AC but Baltimore is not FL so I might feel differently there. If you want to put something back Dyna-mat makes a sound and heat barrier. I've heard of people using Peel-and-Seal from Home Depot but haven't been bothered enough to try it.

~sam

[caffeine]

I ended up finishing the swap a couple of weeks ago. I've been driving it since and it's almost tuned properly; I'm just getting a dog-bone mount made up this week (haven't been driving it hard).

[neophile_17]

Congratulations! Once you get that dog-bone the fun can really start. These cars feel sooo much better with that little bit of weight off the back and some more power.

~sam

[pocket-rocket]

Might I suggest this for heat and noise control? I've seen plenty of guys use it on the Ranger forums and say it's just as good as dynamat without as big of a price tag...

http://www.fatmat.com/

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