Quote:
Originally Posted by Jonny042
Hey Aaron,
One question about the exhaust changes on your clients motor - did the headers change in any meaningful way (both 1-5/8" OD, or ID?) or would you attribute the exhaust flow increase to the Dansk RSR muffler entirely? .
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Header size did not change, They were equal length, but just set up for the production muffler convention. The inlets on the RSR muffler are very large.
Quote:
Originally Posted by Jonny042
It's always struck me that pushing 275-300 hp through exhausts made for 2.4L motors is going to be a struggle. Dansk coming out with the 41mm (OD) SSI's should be a help.
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The inlets on the stock muffler are the beginning of problem. That system was based around the 2 liter and works well to about 2.7 depending of rpm range.
I typically run the stock air cleaner housing, but I do not install a air filter. If some one makes a free flowing foam filter for the stock air filter housing, then I would probably utilize it. I have not bothered to search. There is restriction in the air filter element and I think some have reported a pretty significant HP loss when installed.
Quote:
Originally Posted by Jonny042
Lastly, do you know if that 3.2SS that you describe used a 2.4L pump with a 2.7RS space cam? I know Magnus's STR used a 2.0"S" pump which I've read works ok when calibrated for a larger motor.
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IIRC It was a 2.4T . I usually choose this as I can machine the stock space cam to suit my needs....Also, 2.4T cams are cheap since everyone steps up to the RS cam. the pumps are also relatively common and are the lowest cost to obtain.
If I run an early pump, I have a Mercedes space cam installed simply because they are easily replaced and cheap.
I think the HP limit of any of the pumps is about 450hp. So I wouldn't chase a specific pump. If you were boosting then I think you may need to be selective, like a 69 pump but I am guessing.