how do we know?

83toybeater · Post by **83toybeater** » Wed Aug 22, 2007 10:52 am

how do we know the tranys limits are 100 foot pounds, were did this number come from

gatemaster · Post by **gatemaster** » Wed Aug 22, 2007 7:47 pm

good question. some research would be a good idea to know what our real limits are.
I would also like to know what are the limits of the timing belt in regards to cam upgrades.

83toybeater · Post by **83toybeater** » Sun Aug 26, 2007 10:22 am

my mustangs trans is rated from the manufacure at 275ft/lbs but they put it in a car that was rated at 300. and people say there true limit is around 400.

im just about ready to do a fuel injection swap in my 87 and am trying to decided between the 4age and the 4afe

just some food for thought

thebigbread · Post by **thebigbread** » Sun Aug 26, 2007 10:29 am

4afe= economy version of 4age. the question is: how do you drive? if you're like me (on a freeway or interstate going 70mph) youll want a 4age, most of its power is in the top range. however, if you do most of your driving in low rpms (urban areas where the speed limits are under 30mph, or offroad) then a 4afe is more well suited.

83toybeater · Post by **83toybeater** » Sun Aug 26, 2007 10:53 am

for this winter its going to just be my daily driver to work, witch is freeway/ city. however it will become my primary off road car probly come spring as i retire my 83, if it ever dies (wich i dont think it will) i know the 4afe has my low end tq witch is good for off road, but the 4age has more of a following with more suport in the aftermarket and forms for help troubleshooting.

or i was thinking about trying to find a 7afe

thebigbread · Post by **thebigbread** » Sun Aug 26, 2007 1:08 pm

a 7afe is basically a 4afe with a 1.8L block. It is available in late-90s celicas (the ones with 4 round headlights, i have no idea what generation it is) and i think a few corollas. It has about the same HP as the 4afe, but a good bit more torque in the low end.

im going with a red-top 4age (comes from an AE86) because about 75% of my driving is on interstates & highways. I just dont feel comfortable on a 75-mph zone & having a 62hp engine, im sure some of our other members can relate to that

Typrus · Post by **Typrus** » Sun Aug 26, 2007 3:50 pm

The number comes from SkiWagons doing a bunch of testing.

83toybeater · Post by **83toybeater** » Wed Aug 29, 2007 7:54 am

well i just aquired a 1990 geo prizm with a 4afe for 100$ its gona be my donor for the swap just needs a rebuild

shogun · Post by **shogun** » Wed Aug 29, 2007 9:06 am

ive tried destroying my tranny, but didnt take, nitrous solenoids, but no jets and didnt brake

83toybeater · Post by **83toybeater** » Thu Aug 30, 2007 8:57 am

how big of shot of nitrous?

shogun · Post by **shogun** » Fri Aug 31, 2007 7:02 pm

no jets in the solenoids, so who knows, and i gave it 7 pases in a 1/8 mile track

83toybeater · Post by **83toybeater** » Sun Sep 02, 2007 9:58 am

what did it run?

Dirtmagnet · Post by **Dirtmagnet** » Fri Sep 07, 2007 10:09 am

Why not let the clutch act as a "shear pin" for the tranny? Build the motor up to as many HP as you want, but use weak clutch springs, so the clutch will slip and not destroy the tranny when it is in a high torque situation.

Just a thought....

shogun · Post by **shogun** » Fri Sep 07, 2007 11:14 am

10.37 on the 1/8, and as he said the clutch was slipping as hell, only 2wd passes

83toybeater · Post by **83toybeater** » Sat Sep 08, 2007 12:39 am

thats a good idea with the clutch