Kamotors E30-Turbo to ITB M20

[Dj Buttchug]

My car runs in the 180 210 range all day depending on driving style/ airflow What is not normal about this?

[kamotors]

im thinking flow as well, the little breather hose does not seem to flow any liquid with cap off and car runing

[kamotors]

My car runs in the 180 210 range all day depending on driving style/ airflow What is not normal about this?

because when i beat on the car it gets much hotter. If I was N/A this would be fine, the problem is its a 71c thermostat running at over 200 degrees.

[ak-]

How long is your wastegate provisional and where is it going? Back to the DP or just dumps to the floor?
Can you remove it and see if it will still overboost?
How are your ports setup on the WG?

[kamotors]

dumps to atmosphere

1.00 a/r on hotside

[ak-]

Whoops, I meant the dump pipe after the wastegate. It looks long and squirrely.
Maybe try removing it and see what happens?

[MR 325]

Their inlet/outlet setup is the same as late model e30, upper left and lower right. you might need to improvise a lower hose, but the radiator itself drops right in.

On a 88+ car you have to cut out the perches tat the late model rad sits on. Easy though.

Kam you really should put a E28 radiator in there before continuing.

[Good & Tight]

Is it spiking to 20+psi then going back down or does it stay above 20..?
When did this start happening. You mentioned in a earlier post it was at 14psi now it's higher?

[ThatOneEuroE30]

On a 88+ car you have to cut out the perches tat the late model rad sits on. Easy though.



Kam you really should put a E28 radiator in there before continuing.

E28 or mishimoto. I feel like that plus a low temp therm and a high flow spal fan should have this car running right where it needs to be.

[kamotors]

Is it spiking to 20+psi then going back down or does it stay above 20..?
When did this start happening. You mentioned in a earlier post it was at 14psi now it's higher?

it was 14psi at like 3/4 throttle; at WOT it just keeps going, it would of kept going but i have over boost protection so the car cuts at 21/22ish.
That was the first wot i've done.

My opinion is that the exhaust would rather flow threw my turbo than be redirected threw the wastegate. I am running open downpipe so maybe if I continue to build back the exhaust it will lessen.

[blasphemy101]

I realize I'm entering the discussion late, but some questions I didn't see asked..

Have you verified your wastegate is working correctly? While you're digging around, you might want to pull your gate off and feed it a small amount of compressed air to make sure it is opening completely.

Is the fire ring (if it has one) seated properly? Dumb question, but I've heard of people installing them backwards so they don't seal properly.

Of course, you're right, if you're overboosting, the air is going through your turbo instead of the gate for whatever reason. It might be the gate function, size, or placement. I doubt it's the open downpipe...

[Good & Tight]

it was 14psi at like 3/4 throttle; at WOT it just keeps going, it would of kept going but i have over boost protection so the car cuts at 21/22ish.
That was the first wot i've done.

My opinion is that the exhaust would rather flow threw my turbo than be redirected threw the wastegate. I am running open downpipe so maybe if I continue to build back the exhaust it will lessen.

IMO the turbine housing is too large. A 1.00 a/r is designed for high boost pressure in the 25+psi range. Either add a larger gate or down size the turbine housing.
There are other people running the same manifold w/smaller turbo holding 10psi.

[kamotors]

cooling system plan of attack-
535i rad-ordered
new lower hose-ordered
and will be going with a 16" pusher fan

[ThatOneEuroE30]

cooling system plan of attack-
535i rad-ordered
new lower hose-ordered
and will be going with a 16" pusher fan

Hopefully that fixes problems. Which lower rad hose are you running? I'm using e34 hoses top and bottom and they got perfactly I did trim them a little bit.

[kamotors]

I'll be running the e28 lower as my E34 lower was cut to fit the stock E30 rad, and the lower ports sits further down on an e28 rad.