Brad-ManQ45 Posted July 24, 2007 Share Posted July 24, 2007 Ok, I did my due diligence and Garrett and someone else have threads that the links to pics are gone. I have my engine out, blasted and repainted. I am now wanting to port the exhaust manifold before sending it out to be jet hot coated inside and out, and since I am a visual kinda guy (no, i DON't read the articles in Playboy), I would like to SEE what others in the know have done in order to duplicate a good job. I will also be reaming out the intake for the 60mm throttle body. I already have carbide bits for both aluminum and cast iron/.steel and both compressor and electrically driven die grinders. Can anybody help? Thanks, Brad Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted July 25, 2007 Share Posted July 25, 2007 Bumpity Bump. My exhaust manifold is coming out tomorrow for a gasket change...I would like to see one also. Got pics? Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted July 27, 2007 Share Posted July 27, 2007 I found this. http://www.allpar.com/fix/holler/exhaust-porting.html Quote Link to comment Share on other sites More sharing options...
supraspaz Posted July 27, 2007 Share Posted July 27, 2007 That is a good guide. I may try this. My turbo manifold is begging to be opened up and smothed out. Cygnus , have you tried this out? Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted July 28, 2007 Share Posted July 28, 2007 No not yet, I just put the intake and exhaust manifolds back on without porting anything. I was kind of in a rush. This fall/winter I plan on the big engine overhaul and will work on all the little details. Quote Link to comment Share on other sites More sharing options...
240hoke Posted August 1, 2007 Share Posted August 1, 2007 If you look inside the ports on the exhaust manifold you'll see that the casting protrudes inward to keep the wall thickness constant when the washers are. This can all be hogged out as well as material around the turbo inlet. You can see kinda what need to be done there I didn't go crazy on mine but i did a little. The 2nd and 5th runners are the worst I don't have any pictures of them though. Quote Link to comment Share on other sites More sharing options...
nscason Posted August 1, 2007 Share Posted August 1, 2007 what i was told to do buy a pro race mechanic was to get the gasket that i am going to be using and clamp it on the manifold. there is this small can of red dye that you paint on the manifold where you can see the meterial needed to be removed. then before you remove the gasket take a needle and score around the gasket that way there is a physical mark to port out to. i have doen this with my head, turbo manifold and the intake. looks great and will work a lot better. the head i am going to throw on is about half way done. if i can find the pic ill post it later. Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted August 3, 2007 Share Posted August 3, 2007 what i was told to do buy a pro race mechanic was to get the gasket that i am going to be using and clamp it on the manifold. there is this small can of red dye that you paint on the manifold where you can see the meterial needed to be removed. then before you remove the gasket take a needle and score around the gasket that way there is a physical mark to port out to. i have doen this with my head, turbo manifold and the intake. looks great and will work a lot better. the head i am going to throw on is about half way done. if i can find the pic ill post it later. Except that most turbo gaskets are designed to be about 5 millimeters larger all the way around than both the exhaust manifold and the head. You will have a large jump in diameter where you "port matched" and then a drop back down as you get into the "throat" of the runners of both the head and the manifold. Instead, match the actual dimensions of the head with the actual dimensions of the manifold. These aren't like big cube N/A paper gaskets (where aftermarket intake manifolds are the EXACT size of a standard aftermarket gasket) like that method is used for. Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted August 3, 2007 Author Share Posted August 3, 2007 Thanks Austin! Anyone have pics of the turbine inlet area? (before & after) Quote Link to comment Share on other sites More sharing options...
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