Opinions of engine build up

[Andrew7dg]

Since people are talking about cams, I figured would post something up about some engine build up plans that I had questions about.

People here have had much more experience with parts and combos and I want to make sure I have the right set of parts together.

I am running on the stock block but just got done putting on
Well here is the list anyway
1990Eclipse
6-bolt motor
APR head studs
New timing belt
Blance shafts eliminated
Evo 3 manifold
running on stock intake
255 fuel pump
GM MAF-MAFT
Greddy Front mount intercooler
ACT 2600 clutch and flywheel

For engine management I am going with a MSII system. I know people like the DSM link and there is more support for it but however I like the idea of putting the computer together myself and tuning it.

So my question is how much abuse will the stock 6 bolt take?
I figured I might as well run it close to the limit of use and when I am at that point it will be time for me to take the engine out again anyway.

So with that in mind. What turbo should I go with?
I want something bigger then a Evo 3 16G and I am thinking of a 50 Trim

For cams
I am thinking BC 272/272 but wanted opinions or see what else people like.


I don't need this car as a daily driver, just looking for something fun on the street and the track. It is my fun car and I intend to use it that way;)

anyway I will start there and see what people thing. Also anything else that I need?
4 bolt conversion is on its way also

Thanks!!

[crazy_skier]

I'd say do the 272's, maybe some springs and retainers if you plan on revving over 7500k and then from my experiences with the 50 trim, if you are ok with a little more lag I'd reccommend a 60 or a 60-1 for that little bit more airflow. Either way that should be a fun set up.

[JET]

Well, a 60 trim flows less than a 50 trim. I would do an SCM50 with the 272's. I had the same setup as a 2.0 and it was very fun on the street. I would strongly suggest against doing the MSII. After having the AEM, that is plenty difficult and it much more tailored to a DSM, with wizards and most things preloaded. If you want to tune every little thing, get an AEM. If you want to do basic tuning and just have a car that runs good, get DSMlink. There might be a few megasquirt maps for a DSM that you could get a hold of.

[Andrew7dg]

Well, a 60 trim flows less than a 50 trim. I would do an SCM50 with the 272's. I had the same setup as a 2.0 and it was very fun on the street. I would strongly suggest against doing the MSII. After having the AEM, that is plenty difficult and it much more tailored to a DSM, with wizards and most things preloaded. If you want to tune every little thing, get an AEM. If you want to do basic tuning and just have a car that runs good, get DSMlink. There might be a few megasquirt maps for a DSM that you could get a hold of.

What did you use as an engine management with the 50 and the 272s? Did you use the AEM?

Thanks for the advice! I would like to go with the SCM50, is the ball bearings worth the extra money? I would like to have a good reliable turbo. I will pay the extra money knowing that the turbo can take a little more abuse.

A couple more questions I have

What size injectors should I be pairing these with?
Do you think it is worth going external gate?
If so I have the Evo 3 manifold. What place can I take it to so I can have a flange welded on?

[JET]

I wouldn't do BB for a 50 trim, it spools plenty fast like it is. The difference is probably small. I had my 5 knob SAFC if part of the 50 trim's life, then went to the AEM. You would be fine with a newer style SAFC. If you do a SAFC, you want injectors sized correctly. I used 660's with mine, you could maybe go up to 750's, but that would be it unless you want to do E85.

I would go external gate, you would want to do that off the O2 housing, not the manifold. Take the money saved from not going BB on the turbo and get a nice O2 housing with external gate. 38mm should be plenty.

My 50 trim lasted me quite a while and went to a new home, then about 3 more the last I knew. My SCM61 has been great also. If you have any more questions, feel free to ask.