Is an electric dremel enough to port match the intake and exhaust manifolds? I have an air compressor...

Also, what kind of bits should I get?

Basically, I found a Z6 head and IM at Ecology. I wasn't planning on this, but I couldn't pass up such a great deal. So I'm going to convert my 90 Si to OBD1 and do a mini-me. I have a Z6 exhaust mani, but not the downpipe, and since it's got two ports instead of one, I have to use my A6 exhaust manifold for now. I'm thinking that it should be fine as long as I port match it. Car's already fast anyway.

I've been doing bolt-ons for centuries now and I'm just delving into engine internals because of this opportunity. I know the gains are small, but I think it will be a fun learning experience.

Any other suggestions of what I should do to optimize this head before I swap it on? Keeping in mind of course that I can't afford any exotic parts, but my labor is cheap. I'll get some ARP studs and new gaskets, but not a cam or any big dollar parts like that.

Anyone ever try bypassing the coolant passage on the IM on a street car in a warm climate?

How difficult is it to do my own valve job?


Modified by suspendedHatch at 12:33 PM 8/4/2006

 

dremel would be fine for the intake manifold since it is aluminum, but a die grinder (for use with your air compressor) would be better for the exhaust manifold since it is cast and much harder for a dremel to do any damage to. i picked up a die grinder with bits at harbor freight for about $10. you will spend that much, if not more in bits for the dremel if you go that route. don't get crazy and try to port the intake side of your head because there is some more to be done rather than just making it bigger.

also, check my signature for some parts that might interest you. the pistons would act the same in a Z6 as an A6 with a Z6 head.

 

Thanks for the helpful response.

Should I just use a die grinder on the IM too? I have a dremel at work. I'd have to buy another to use at home. So should I just buy a die grinder to use for both? Any suggestion on which bit to use in particular?

Already have the parts, but I'll take a look. I have to go enable sigs.

 

yeah, a small (1/4") die grinder will do the job on both just fine. you'll want a more abrasive bit for the exhaust manifold and one not so harsh on the intake just so that you don't take off too much too quickly.