match porting, intake, exhaust..., d-jet performance gains Options

[mattillac]

i plan on taking apart my 75 2.0 to see if the jugs and pistons and heads and valves, etc. are still good. if i'm feeling brave i'll try my hand at some port matching and maybe a polish if the heads are in good condition. does anyone have any experience in using an unadjusted d-jet with a mild match\port and polish? i dont know if i gots the skills to mess with the mps. has anyone used any resistance between the head temp sensor with any gains at all? maybe i'm going in the wrong direction with this one. that wouldnt suprise me. (IMG:style_emoticons/default/wacko.gif) i've also got an open element air filter. when i find a good local welder, i'll have my ricer muffler on there pretty soon.

[Bleyseng]

I did port matching especially on the intakes. The exhaust is where all the gains can be had porting, although its kinda thin so you don't take out much. Jake has a new cam that might be better to gain hp as it has a longer exhaust duration to get some real flow=hp.
After porting,tuning the djet I have dynoed 95 hp at the rear wheels which is about 110hp at the flywheel. Most stock 2.0l dyno about 80hp to give you an idea. I wouldn't just start hacking at the heads as you can ruin a set pretty damn fast!

Ask Jake for a cam change as thats money ahead.

Geoff