I blew a coolant seal and rebuilding the motor. However I would like to do a few power adders as it is a stock FC. I have never bought templates before or and would like everyone's opinions on what is the best company to buy them from.

Thanks!

 

Also the best place for water seals. The strongest type and if it is worth getting the reusable ones. I do not plan on taking the motor apart over and over however if they are stronger or something I would like to know!

 

I got my templates from Pineapple Racing. Mainly because the ports on the template were already cut out and the way the exhaust ones attached to the rotor housing. That said I think lots of people have used the Mazdatrix ones with success as well. As to the water seals I used Pineapple's HD one's, but only because that's what came in their kit and they had the best price on rotor housings at the time. So far so good. Have about 50k on them.

If this is a n/a and you need rotor housings. Get turbo ones so you can ditch the diffusers in the exhaust ports. Some power can be gained there. Also if n/a you need to put a freer flowing exhaust on to see the benefits of porting as well.

 

Sounds good. I was wondering what your opinion on cutting out diffusers on NA housings.

 

People have done it but the metal they are made from is pretty hard so most recommend against it. My housings weren't in great shape so I just bought turbo ones. Some people replace just the exhaust sleeves with the turbo ones without the diffuser. I think there is a roll pin or something that can be knocked out to remove them. Only thing is I don't know where people are sourcing the sleeves. I would do it only as last resort, that said I wouldn't put the motor back together with them in there even if I had to figure out a way to grind them out. Search in the n/a performance section 'cause I know it's been discussed in there quite a bit with some telling their method of successfully doing it.

 

Buy a junk turbo housing if the guy doesn't want to take it out. Post a WTB.

 

Nice. I wonder how much those things really get in the way. I am thinking I will just use turbo housings as it is not worth the price of the tools to take the sleeves out. Thanks!

 

I've always had good luck with Pineapple templates. Their "large" street port template is pretty aggressive but won't eat side seals. Mazdatrix and RB are pretty conservative by comparison. My 13BT "large" template would idle okay at 900 but had a noticeable lope to it. It also had slightly worse part throttle drivability. I'd get hiccups around 5% throttle and light load like cresting a hill. No tuning changes helped, it was just a side effect of misfires from the additional overlap. I don't see how someone could stand to daily drive a bridge port ...

I've always had preferred grinding out NA diffusers. I use a carbide bit and an air die grinder. I have NEVER been able to remove a TII exhaust sleeve. I've broken so many drill bits trying, welded a bead to the roll pin, tried using a screw, ect. I always end up grinding out the NA diffuser and made a lot of power doing so.

 

I have never taken a sleeve out and wondered how hard it would be. From what you say, I am glad I just bought new housings!

 

I also use pineapple racing n/a large street port for intake, been driving a few days now, seems good. 6 port turbo

 

What is your use for the car? Daily driver? Track only? Mixture?

You're not going to gain huge amounts of power porting the NA engine without making sacrifices elsewhere in the power band. Which may or may not be acceptable depending on what you are building the car for.