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View Full Version : New Motor. Looking for tips.


Supercomp729l
03-25-2009, 05:05 PM
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kenmosher
03-26-2009, 11:10 AM
You'll want injectors and a chip to go with all the extra airflow (I'd recommend just getting the 60#ers with a TurboTweak or Bailey chip).

Consider an intercooler ... at least a "big neck" upgrade, but preferrably a stretch intercooler (since you need to pass visual inspection, it's hard to spot a stock location stretch vs. a front mount).

I think I'd also consider a downpipe, if it'll pass visual ...

Keller
03-26-2009, 12:13 PM
IMHO, the cam profile looks a little large for the combo. I'm not sure you will make use of that much duration.

I also don't believe that a 70mm throttle body is necessary. Having the stock one ported to 62mm or going with a 65 mm should be sufficient.

I would suggest an aftermarket pump vs. the Boost-a-pump. You already have the hot wire setup. That should make for a more reliable setup. With less hassle.

PaCemkr86
03-26-2009, 06:52 PM
Tom, all you need to add to that list is some good fuel injectors 60#ers , and stretched stock location intercooler

Supercomp729l
03-27-2009, 11:26 AM
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kenmosher
03-27-2009, 11:37 AM
Not Keller but IMHO = In My Humble (or Honest) Opinion

208/208 is plenty of cam for that turbo ... big turbos like a little more cam, so some folks step up beyond 212/212. It's a function of the exhaust flow with different turbos (and backpressure associated with them).

The turbo changes a lot of stuff that would be normal on a naturally aspirated combo. Something in the <210 (even a split duration 210/205) works really well on a street combo with the "smallish" turbos (such as the TA49/60 range). Once you get up to things with 70+mm wheels, they start responding to bigger cams ... until then you just lose bottom end.

Basically, if you look at flow profiles on the V6 heads, most stock based heads (without extensive rework) benefit from fairly low revs (<5700 RPM) and it's important to get good low/mid lift flow numbers (i.e. <0.450") than really crazy high lift numbers.