Minor Threat

Except, his turbo spools 1000 rpm sooner.

So no damage, all good. Turbos own everything, ---- VTEC, Type-R's are gay.

BoosTedZSix

is that proven already? or do you think its going to spool 1k sooner?

USS

What did you use to port it?

splitime

I'm going to bet that you just fixed some unknown exhaust leaks... I'm spooling the 60/63 on an HF manifold at the same rate you are... stock head and 3in DP.

MAJORAHOLE

i'd assume he used a die-grinder, because he mentioned that your not supposed to touch an are with a die grinder?

i believe you can use that or a dremel. eastwood co. sells a DIY head porting kit that i think you use a dremel with.

MAJORAHOLE

with a d16z6?

samson

Ha. I love it. I don't think I have the courage to touch my head. Well, maybe I do. , but not right now. I can't blow any money. LOL. Definatly cool. So you didn't even PORT the exhaust? Just polish? And the intake you ported AND polished? W0rd. I get the exhaust veolcity thing, but intake wouldn't effect spool time and just polishing the exhaust really helped THAT much? Just curious.


JP

sohcpwr

you have to port to polish, to some degree. The sandpaper rolls get a finer and finer finish on the port walls, then you use the cross buff polishers. so on the exhausts, i only removed enough material to get an even finish with the appropriate grit roll that i was using. On the intakes, i actually removed a little more metal, with a line of sight porting to the chamber. the intakes are fully polished as well.

i used an air powered snap on die grinder to do it all.

the turbo is proven to spool about 800 rpm sooner. remember full boost is 20psi, not 10. I could have flow benched it, but the instructions were really complicated and it seemed too time consuming. It helped, i can feel it most from 6500-7200. It felt like it didnt pull as hard before during those rpms, now it pulls constantly right up to redline.

samson- the engine can only expel exhaust gases as fast as it can ingest them. Remember, an engine is basically an air pump, the more that gets in, the more goes out. But you are right to some degree, getting a mirror finish on the exhaust (especially right out of the chamber and by the valve guides) is where most of the gains are.

If you dont think it helped, you can drive your *** down to south jersey and ill show you.

splitime

Yes, and with conservatively rich basemap tune... it was 15psi by 3500, not 10

samson

I hope this isn't meant for me? I'm just asking not disbelieving. I don't want to see your car because I KNOW I'll want to build mine, and right now is a very good time too. Anyway, I TOTALLY understand the intake versus exhaust with getting out what it gets in. VERY good explanation. Um, I'm sure you'd feel it before 4500 too being that you have 20psi throughout a MUCH larger rpm range.


I'm mad now because my buddy's Dad brought one over for us to clean the block and head surfaces when we did the ARP/Headgasket install. Perfect time, too. I really want to see this car this summer though. Maybe a Mid-Atlantic meet and I'll get my wish. None the less, sure is pretty sweet. What was the site that you read your How-To to do this from? I'm just curious with reference and future knowledge.


JP