My e30 318is s52 swap thread

[windsor318is]

Yup, just finished putting in the in-tank (put in the outboard and filter in last night). It's a rocketship. :) I worked up from 2nd through 4th, dunno how fast I got up to, I was too busy keeping it straight lol

good to here mister! exhaust is all done, seems to run better when i can here myself think! sounds perfect!

[e30s52]

i like that answer

[BigD]

bigD you get your fuel pump yet?

Yup, just finished putting in the in-tank (put in the outboard and filter in last night). It's a rocketship. :) I worked up from 2nd through 4th, dunno how fast I got up to, I was too busy keeping it straight lol

[windsor318is]

alrighty, i think ive found a DIY exhuast setup for this swap, i fitted the exhaust just to see how it would end up length wise...and its perfect length, finally something worked out on this swap, i fitted the supersprint resonator to the headers for good, but i didnt have the gay clap that connets one of the pipes to the cat back, but i did start it for shits and giggles. you guys are going to kill me for not having a sound clip but it sounds perfect, nice and quit at idle and not annoying opened up. i should have it installed with pics tomorrow, or i might have some patience for my friend to weld the 2 hangers i made for the AA cat back.

to answer the adjustment of the booster, the bastards at zionsville dont thread the end fork like it shows in the cd, they weld it on, so i cant adjust it unless i bend the fuck out of the brake pedal. not sure what to do with it....

bigD you get your fuel pump yet?

[BigD]

vanos

Ah.. thanks.

[mattdk318i]

vanos

[BigD]

a 92 DME is in no way compatible with your chip or your motor.

How come you can't use a 92 DME, aren't they all pretty much the same, for all M50s?

[matt]

a 92 DME is in no way compatible with your chip or your motor.

If your diagnostic port doesn't work, you may have a bad wiring harness. As long as your M42 had a 0-1V 4-wire O2 sensor, it should work OK. Make sure you have it connected right. You may need a bentley or the ETM to make sure all the correct wires from the harness go to the correct wires on the sensor.

[Charlie]

nope, and i was told the flexing i do have is normal apparently...

Who told you that? I've *never* seen an M50 (or M52 for that matter) manifold do that.

-Charlie

[windsor318is]

matt i was going to put your chip in the 92 ECU and give it a whirl, not stock setup, is that a waste of my time as well?

you telling me as long as its a generic bosch 4 wire o2 it will work? my m42 sensor was only a year old, people told me i HAD to have the s50 one, im swapping it tomorrow, worth a shot, i might invest the 100 bucks for another manifold, i can always through it on my 328 if it makes no differece, no money wasted.

matt my mechanic tells me he cant pull codes off my diagnostic port its hooked up wrong....but it has power and ground, is that possible, i didnt fuck around with that part of the harness when i installed it....what do you suspect the stealer will say if i brought them a s52 powered e30?

[matt]

matt thanks for your expertice, im going to steal my moms 92 ECU switch chips, and give it a try just for the hell of it. once the mechanic installs the exhaust, im going to do my feared compression check.

bigD, i bought the motor from a RMP customer, they removed it and also did a comp test before i bought it, they also confirmed it was a strong motor before it was pulled out for a swap to a s52 that the customer had purchased at a great price with a blower already installed on it.im confident that its nothing mechanical like Matt suggested, but you never no,

so i take it i should swap o2s just to be sure??? can i try the m42 unit or modify the plug end on the factory s52 o2?? id prefer not to buy a new s50 o2 and have it make no difference.

Matt, if i were to swap chips without disconnecting the battery would the ECU not adapt to the new chip properly?just a weird thought.

A '92 chip won't work... a '92 ECU won't work... don't even try!

Adaptation values are stored in the ECU as long as power is connected, but I would NOT try to swap chips without disconnecting the ECU to save the values... Assuming your O2 sensor is working properly, it will adapt again very quickly.

NO flexing of the intake manifold is normal!!! We use these up to 30 psi and see NO flexing. I really think that could be part of your problem.

As for the O2 sensor thing, you can find cheap ones on ebay, just search "4 wire oxygen sensor" and look for the generic ones. The guy I usually buy from doesn't have any listed right now though.

[BigD]

When you thread the fork onto the booster pushrod, that's when you're "adjusting" it. You're supposed to keep playing with it until it's neutral, not tight (ie applying pressure to the booster).

[windsor318is]

nope, and i was told the flexing i do have is normal apparently...

anyone know if there is any adjustment on the booster, i have to pull up on the pedal to put the pin in to lock it. so my brakes are applying once the motor is warmed up, anyone else have a problem like this. i might even have to pull it out and cut the pin on the master cyclinder side.i dunno.

[Charlie]

So, you ever get a video of this "flexing" intake manifold?

-Charlie

[windsor318is]

I know you asked matt, but i have to chime in because I do this at work all the time (with fire alarm equip and know i shouldn't). Don't plug things in or take them out without killing all power to them first!!


Perhaps it has no effect on car ecu's but it made me :nice: because i find myself doing it sometimes (but on equip that i dont care if it blows up :mrgreen:). As a general rule of thumb, you kill power to electronics before working on them.

Hope you get things sorted though, i'll be keeping an eye on this thread to see what happens! good luck bud.

i no i no, but after disconnecting and connecting chip 14 times, im not sure if i did it the last time with his chip.but tecnically it is disconnected when i unplug the computer harness.