Any know where to get a good porting template? Anyone used the mazdatrix one before? I plan on doing an extend port and would like to find a good template.



thanks

 

Care to tell us what kinda car you got?



-Ted

 

Oh sorry it's a 3rd gen.

 

Anyone? I found 2 so far, the mazdatrix and the racing beat. Any opinions?

 

I have the Racing Beat templates, both bridgeport and streetport. You can't go wrong with them.

 

Do you find the std Templates a bit tame?

 

Yes, it is fairly conservative, many people have larger ports with extended timing, but, it's a great place to start. This particular port was designed to be a 'street' driven port, as in daily driver, not a max hp port.

Port shape and size mean a lot, but tuning is everything.

 

dvcn: Do you know where to get a template for a more aggressive street port?

thanks

Tony S.

 

Sorry, not sure where to purchase one. My slightly larger template is not backed up by a dyno and still smaller than many ports I have seen.

A 'monster' sp won't have a huge jump in power over the RB sp. If you are looking for a big increase, you might consider bridge or secondary pp.

A first gen I tuned had an absolutely huge 13B street port and a very long list of the right parts. Before tuning it ran a 15.6 1/4mi. After jetting, timing and fixing the exhaust it now runs a 13.8. Tuning means a lot more than a minor change in porting.

 

has any one ever tryed to find out the power gain per psi on the three most comon Extended,Bridge and PP Ports? if so do you know what sort of gain you would expect provided they where done right?

 

Is there a downside to porting the exhaust ports. I hadi it done along with the street port and the car has no power until 4500 rpm and the boost comes on at 4500 rpmwith only 5 pounds. I'm wondering if there is now too much overlap or something.??

 

I take it you have checked for air leaks?

 

how would you do a half bridge port like soulass's motor ?