Cheap/Basic M42 Mods.

[2002maniac]

When I put in my medium case 4.10 with the turbo car I didn't even have to shorten the driveshaft, it just fit in.

yeah, what's this talk of shortening the driveshaft? I'm positive the input flange is in the same place.

[pbr87]

What do u guys think about spray maybe like a 75 shot?

Don't do it.
It's bad for piston rings and head gaskets, and it puts harmful sudden load changes on your drivetrain components.

If you're going to build a car for nitrous, to reliably handle a 200+ shot, props to you. But this requires a built motor, metal head gasket, special piston rings (there's a company called Hellfire that makes them), and strengthening/upgrading almost every piece of your drivetrain.

[freeride53]

inspiration, yo!

[ThaiRacer]

Man I never knew my M42 was pretty quick. I beat a 87 325 last night and had 2 extra passengers with me. And then I raced a acura RSX and was behind by half a car the whole way. dam i was surprised

[Danny]

When I put in my medium case 4.10 with the turbo car I didn't even have to shorten the driveshaft, it just fit in.

[e30guydownunder]

True. Even now with the turbo I spend more time over 3k... so good point. Was just thinking of someone who was used to "more" torque down low for city driving or something. Most 318is drivers do wind their car up pretty good and won't notice the loss of torque down low.

I did a 400km cruise today, spent the better portion up over 3.5k good fun the freeways in the hills out here :) 4.45 Diff is really short!

Sweet, I thought I would need a driveshaft from an m20 car...

Nope tailshaft is telescopic, simple job :)

[Schnitzer318is]

I do hear about low end torque going down, but does it really affect the car when driving it (hard) because when I am driving spirited, and like the feel for power, it usually isnt seeing below 3k

Just curious.

True. Even now with the turbo I spend more time over 3k... so good point. Was just thinking of someone who was used to "more" torque down low for city driving or something. Most 318is drivers do wind their car up pretty good and won't notice the loss of torque down low.

Unbolt 4.10 small case, loosen the flange nut on the tailshaft and shorten it slighty, bolt in 3.73 medium case.

Sweet, I thought I would need a driveshaft from an m20 car...

[fiftytakedowns]

Delta camshaft regrinds.

Do we even care about low end power for a m42 though?
does teh torque increase up top, where it is ACTUALLY driven?

I do hear about low end torque going down, but does it really affect the car when driving it (hard) because when I am driving spirited, and like the feel for power, it usually isnt seeing below 3k

Just curious.

[e30guydownunder]

Unbolt 4.10 small case, loosen the flange nut on the tailshaft and shorten it slighty, bolt in 3.73 medium case.

[Schnitzer318is]

the beauty of the 318is is how fun it is to drive, not necessarily how fast it is. I'm sure the turbo m42 guys will disagree...

Yes... and yes. Turbo m42 is major :). I find any excuse to drive it. And by that I mean I daily it.

Delta camshaft regrinds.

Had those and are great for top end power. I dyno'd 136 to the wheels with those, delete parasitic fan (efan), 4 pintle injectors (mustang), ebay proformance chip, and cleaned up vacuum lines. Warning though, you do lose a good bit of low end torque. When I put my stockers back in for the turbo setup, gained ALOT more torque below 3000rpm.

My understanding is...

I have to get with you on what's involved with swapping the small 4.10 diff with a medium case 3.73 from my m20 car. The turbo makes 4.10's less than ideal.

[cepa318is]

Delta camshaft regrinds.

Any more information on what you had done? What were the specs of the camshafts?

[2002maniac]

what cams did you end up getting? i've only been able to find schrick, wondering if there's any other options.

Delta camshaft regrinds.

[decay]

I've done cams too, they are awesome on the track but suck for the street.

what cams did you end up getting? i've only been able to find schrick, wondering if there's any other options.

OP: i did the COP ignition a short time ago. easy job and smoothed out my idle nicely. i can't report a power change because i'm in the middle of doing injectors/FPR, but people widely report positive results with it and the cost is under $200 for everything. Rob with the white fender-flared turbo car is selling them over on m42club.

[3bvert]

mine ( 91 318ic)
no p/s or a/c
volvo elec fan ( delete clutch and fac fan,)
no sankes under manifold, no heater plate
head shaved, had too, cracked, warped, repaired
ported/polished...did not take hardly a touch, fac is pretty close
4 pintel injectors
chipped
copped
free flow cat adn magna flow rear all on a 2 1/2 inch pipe ( same price as 2 1/4 so why not), 3 inch out of muffler

when clutch goes , it will gt replaced with a lightweight set up


the fun thing about it all, was it was all in "repairs" and most of it cheaper and "better" then stock

get high 20's street,( depending on my foot) 30 something hiway

most of this inspiered by tjts1's

[Rob]

sure, you can use spray for a temporary boost, but honestly, if straight line speed is what you want, you have the wrong car, unless you want to dump a lot of money into it...

the beauty of the 318is is how fun it is to drive, not necessarily how fast it is. I'm sure the turbo m42 guys will disagree...