Dburt's Rusty Nitrous LS M3 Build, now twin turbo

[dburt86]

yea it squats crazy and starts rubbing very hard. My wheel well arches are covered in rubber.

[E36 HateR]

Thats a problem, under load its changing the suspension angles out back, what kind of bushings do you have?

I say add something like 16k up front, and 8k-12k out back with some really good shocks.

The shocks have to be set to full hard so they take the hit and stay down and the suspension geometry will not change.

Apples to oranges with our cars, but my car on a 275 26 radial was dead hooking first and second gear at 33-34psi on my car after they were warm, I know with an auto and your beast of a setup it will be more difficult but im sure you can figure it out man!

[dburt86]

Its got some kind of bushings in the rear, i dont think they are polly, but the other stuff i cant remember the name of. Im going to start with getting the rear raised up a little bit by adding the factory rubber mat things that are under the spring from the factory. Between adding the upper and lower, i think it should gain 1/2 of ride height.

Im looking into getting a set of viking double adjustable to keep the rear down. Right now the Konis are in there to full hard but it doesnt stay down. My buddies malibu will take seconds to come back up after compression and his car goes 1.1 60ft. My car instantly comes back up.

The alignment i set pretty close to 0 camber with about 2-300lbs in the back of the car, which is prolly why it rubs worse then the m3 did with the same rear suspension/tire setup.

Car has unstable fuel pressure with low fuel, which is a problem when you cant trust the fuel gauge. I have a feeling its got something to do with the factory jet pump. That thing can suck a fat one. Been tossing ideas around with CJ.surr about getting the sides equalized. Might try something soon.

[cj.surr]

^I agree. The car is really fast but a lot of guys are having better luck with stiffer suspension. It just feels too loose under load.

Did you have the TC on last night? Might have been part of the roughness if it's not dialed in yet.

[dburt86]

it was off for our ride.

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I have a ton of different springs around the shop. I can try them

[cj.surr]

Car has unstable fuel pressure with low fuel, which is a problem when you cant trust the fuel gauge. I have a feeling its got something to do with the factory jet pump. That thing can suck a fat one. Been tossing ideas around with CJ.surr about getting the sides equalized. Might try something soon.

Even with 3/4 tank, the FP was dropping off. So it's not just low fuel level when the problem occurs.

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I have a ton of different springs around the shop. I can try them

I would try the stiffest you have and see if it gets better or worse. I think it'll get a lot better.

[dburt86]

You cant look at the gauge because im using to passenger side sending units and had to modify the float level

Im looking into the springs. I dont think the stock ones are too far off from being correct. I think a set of sport springs would prolly work if i can get enough height out of them.

[dburt86]

I made some spacers for the rear to gain some ride height. Gained quite a bit. While it was in the air, I noticed the tire is rubbing the inside of the quarter, like inches above the actual lip of the arch, LOL.

trying to goto the track next Wednesday so I'm going to take my time and get the car setup proper

[3literheater]

Very nice! Do the rear tires go all wackballs crazy out of alignment under power? I remember jfdmas's car the rear wheels moved like 3/4 of an inch in the wheel well on the dyno.

Was this because he had all factory used bushings needing replacement or was this even with all poly stuff?

[someguy2800]

He did have all rubber bushings as he thought it kept the axles and diff alive launching on slicks.

Food for thought, all of the force pushing your car forward is going through two metal trailing arms that are bent into a horseshoe shape and attach to the car on two small sheet metal pockets that are spot welded to a sheet metal panel. What do you think happens when you push on all that with about 3500 lbs of force?

[dburt86]

Yea thats a good point. Basically one of the many reasons these cars suck for this

But this car has all the bushings in delrin and plated control arm pockets, so hopefully it sucks less.

Also, i have to space my subframe down. The driveshaft rubs everywhere lol.

[octanematty]

Would be really interesting to build a double wishbone rear subframe for an e36

Similar to a cobra IRS design, using the aluminium case ford 8.8 also

Ps excellent build thread dburt

[dburt86]

thanks man!

So i lowered the subframe and spaced up the stock springs. It looks like a factory ride height.

But now the car doesnt feel like its coming apart in boost. When i had it apart, i noticed the DS rubbing in spots i did not anticipate and the tires were rubbing everywhere. Inside, outside and up on the quarter panel (likes 4-5 inches above the arch on the inside)

Was just beating on it pretty good and theres no rubbing yet that i can see.

Theres a track rental this friday. Im trying to avoid breaking the car until then.

If it goes fast, i may sell it LOL

[dburt86]

Issues.

I think the reluctor wheel on the crank is messed up. Started giving me crank errors and now the car just starts and dies. Tooth log shows it missing a tooth on every revolution. Further research shows that the 24x wheel is common to fail.

Crank is brand new from texas speed with a brand new reluctor. Currently trying to get the car to my shop to inspect proper.

If the wheel is the issue, the entire car has to come apart. Pretty gay. Pretty salty about it.

[tptrsn]

Going back one post, what method of spacing down the rear subframe did you use?

[dburt86]

I got the thick washers from Mcmaster. 2 each stacked on top. 150mm bolts are just too long. 140's would work good.

[dburt86]

So shit happened.

First heres a vid of a street test launch. It was starting to work. It would come down and leave and then it would unload the front a little bit and spin but still left pretty hard. This is foot brake with a 3000rpm launch control


In that video, the car lost power when i shifted into 2nd. Thought it was weird, so i limped it home. On the way the car started having massive crank sensor errors and it progressivly got worse until it basically didnt run.

Next day, towed it to my shop, thinking it was the reluctor wheel, because 24x LS wheels are known to have issues. But this crank is from texas speed, and its nice and had a welded trigger wheel.

Hopeful it was still the reluctor wheel, even though i knew it wasnt, i found some terrible shit.

Thrust bearing is smoked. Looks like the trans had excessive converter charge pressure and thrusted the crank forward. Itll need a crank and bearings for sure, and ill prolly change the lifters (again, these are brand new ls7)

Its clear now that the excessive amount of thrust moved the trigger wheel out of range of the crank sensor and was causing the errors.

Id like to think theres a silver lining, but i havent seen it yet. Money is tight, so itll be a month or so before i can get it back together. Might start blowing truckers to pay for this

[rajicase]

Might start blowing truckers to pay for this

The first few are tough.
You will go home and have nightmares. You feel like a dirty skank. You'll hate yourself. You'll drink a fifth of vodka to mask your pain. You will contemplate suicide. But you'll get up, put on that pretty pink skirt, sparkly lip gloss, and dark eye shadow and go to the flying J and do it again. And again. And again.

You will go through ups and downs. Good days and bad days. But as you look up at Billy joe in his decked out freightliner with those pretty little whore eyes of yours , just picture yourself banging gears in your badass TT v8 e36 and forget that you have a 3" hairy dick in your mouth that hasn't seen a shower in 6 weeks.

It'll all be worth it in the end. Take it from someone who has been there.

If you need any support, just hmu. We will get you through this.

[dburt86]

The first few are tough.
You will go home and have nightmares. You feel like a dirty skank. You'll hate yourself. You'll drink a fifth of vodka to mask your pain. You will contemplate suicide. But you'll get up, put on that pretty pink skirt, sparkly lip gloss, and dark eye shadow and go to the flying J and do it again. And again. And again.

You will go through ups and downs. Good days and bad days. But as you look up at Billy joe in his decked out freightliner with those pretty little whore eyes of yours , just picture yourself banging gears in your badass TT v8 e36 and forget that you have a 3" hairy dick in your mouth that hasn't seen a shower in 6 weeks.

It'll all be worth it in the end. Take it from someone who has been there.

If you need any support, just hmu. We will get you through this.

You dont know how much I needed to hear that lol. I've been sitting on my couch eating Twizzlers since about 1pm

[doktor b]

You dont know how much I needed to hear that lol. I've been sitting on my couch eating Twizzlers since about 1pm

Now I want Twizzlers.
GDI

[E36 HateR]

Damn bro, i feel your pain, i hope you can get it together soon, the purist gods are really testing you.

[dburt86]

I was very tempted to roll a new bearing in it and bring it to the track but I didn't.

Im mad, but you know what, it's whatever. The car is built right, it wasn't a big failure. If I knew more about autos, I would have caught this.

[tptrsn]

I don't know enough about autos either, was it a lack of pull-back space between the converter and the flex plate (1/4" - 3/16" according to PTC, right?), or something else I don't know about??

[Bke36Is]

How did you pin point the problem to the converter? Is that a thing with those motors? Just curious for the future!

Sent from my SM-N920P using Tapatalk

[dburt86]

I don't know for certain but the converter had good spacing. I'll get the trans dynoed to confirm but at this point I can't see it being anything else