joe2dmax

can someone clear this up for me... i called racing beat to order templates for my 1988 rx7 N/A....... SOrrow said that my car is a 6 port.

now i called RB to try to get a porting template for my car.. they said they dont have it... asked them why.. they said that there is no use for portingmy car because it is already a 6 port. my question is. where can i get a porting template to make my holes bigger..? what does everyone do here to port there 6 port engines? please clear this up for me. im pretty new to the rx7 scene.



thank you and have a nice day.

75 Repu

I read that in their catalog too. I would also like to know.... Maybe you can just modify the sleeves or something of that sort..so they will always be open. There is a faq on that somewhere....

joe2dmax

well i got this from mazdatrix site... they didnt really explain that much.. but here it goes..



http://www.mazdatrix.com/faq/port6p.htm

joe2dmax

i need to port (make the holes bigger) onmy 6 port engine... cananyone direct me to the path of "fastness"

joe2dmax

well mazda trix sells them for 52 bucks.. does anyone else get it cheaper somewhere?

pengaru

there is not a whole lot of porting that can be done on the 5th and 6th ports, you can port the secondary intake ports on those same housings a bit... but really these housings are not great for porting, as the ports together are already pretty large anyways... but you can replace the intermediate housing with a turbo intermediate which has much larger primary ports than the 6 port motors' intermediate housing, and also has alot more material around the ports permitting far more porting than the 6 port intermediate housing too.



another factor is the rotor housings for the exhaust ports, the 6 port engine has diffusers in the exhaust port sleeves that kill flow and are difficult to grind out... you can get the turbo rotor housings which do not have these sleeves and can be easily ported. I'm not sure if you can just get turbo sleeves and put them in the 6 port rotor housings.... new rotor housings are usually a good idea anyways when doing a rebuild though, unless yours are practically perfect.

ChainSawOnSteroids

are you saying that i cant get a bridge port on my stock 86 6port motor?

SoRRoW

ChainSawOnSteroids--no room for bridge





I was going to cut out the difusers..and open the exhast ports also..



Mazdatrix sells the template..If its not from RB or Mazdatrix..Im not sure I would get it anywhere else..

mazdaspeed7

No room for bridge? Why do you say that? The ports are same distance from the rotor housing as on 4 port motors. There are other reasons theyre not normally bridgeported. For one, it makes the port open around the same time as a PP, but closes later. Not exactly good for a street car, not to mention to mods required to make the engine reliable at 10K+ rpm.



Are the mazdatrix templates $50 each??? Ill make you some templates for a lot less than that. And I do know porting. If you want pics, hit me up on AIM.

Turbo II

No room for bridge? Why do you say that? The ports are same distance from the rotor housing as on 4 port motors. There are other reasons theyre not normally bridgeported. For one, it makes the port open around the same time as a PP, but closes later. Not exactly good for a street car, not to mention to mods required to make the engine reliable at 10K+ rpm.



Are the mazdatrix templates $50 each??? Ill make you some templates for a lot less than that. And I do know porting. If you want pics, hit me up on AIM.[/quote]

cool