Rob B.

I dont know if this is on this site anywhere else, but I did a search and was unable to find anything on the topic.
however, its come to be about time to pull the motor out of the turbo II and go through it and replace some seals and things of that nature, so i figured while ive got it out, i may as well get some more power too... anyhow, I suppose i was wondering what the optimum port type would be for a street driven car (target hp = 270 rwhp, but not for a while). Also, i read in sport compact car's project fd rx-7 that (according to them) it is possible to move the entire torque/power curve to the right, increasing horsepower, but decreasing heat causing torque. Is this true at all? or only possible on the FD motor or what?
well, thanks,
-Rob

SirCygnus

iTrader: (1)

what? you mean you want the power to come later on? whys that? so you can slam on the gas and wait 5 minutes befor you start to feel like your moving?

just port it and turbo it. make shure its cooled.

ddub

Do you have emissions where you live? If not then bridge the secondary with as much extend porting as you can fit and an aggressive streetport on the intermediate plate (primary ports) should yield you the best power while keeping it streetable. You'll want to do other supporting mods with that too, though.

Rob B.

I sincerely hope you were joking with that comment, sirCygnus...of course i want immediate throttle response, but im in highschool and money is an issue, so later, like when i get some more money, then more power will be good. And im looking for a reletively easy to perform, effective port that will pick up power (hopefully) across the band, but as im putting the engine into a 2100 lb opel, a little extra shifting should be ok for a little more power. Oh right, i live in rural ga, so no, we dont have emissions....and with that money issue, supporting mods are also an issue. I tried to find the link on the scc website for their project rx7, but they havent updated their project car page in quite a while, it would seem...they dont have the last article on there (from like a year and a half ago). So basically what im saying is that a new intake and exhaust will have to be fabricated and installed, and i hope i can do a competent port but i dont know what that is for my means (bridge porting looks like it would severly weaken the area that the corner seal rides on, i realize thats the purpose of the bridge, but still). Anyhow, im looking for maybe 200 rwhp after these mods, but i think im probably being overly optimistic.
-Rob

ddub

In that case, go for an aggressive streetport but make the closing edge as far up the iron as you can, with side seal clearancing. If you search on nopistons.com Judge ITO has pictures of his aggressive turbo streetport templates that you can get an idea about, he also has some good threads about side seal clearancing as well as exhaust porting.

Rob B.

Thanks, I went to nopistons and found some interesting things...http://www.nopistons.com/forums/inde...howtopic=46622
I found that thread in my search of port stuff, and in particular there was something about a pineapple port which really helped speed spool times. Is this adviseable? Also, I found that most ppl on there really pushed bridge ports and said that if done right, they can be very streetable, but a streetport still seems like a better discision to me (I will probably be doing it myself with a dremel, and a streetport looks easier) also, I am not looking for nearly as much power as most people on there, so....
Thanks,
-Rob

SirCygnus

iTrader: (1)

trust me, after you drive it and realise the power, youll want more. and more, and more. and more.

1RevvinFC3S

I want a bridgey.

Aaron Cake

iTrader: (1)

Streetport. The Racing Beat templates are a good shape. Not too aggressive, but not weak. You can make some serious (probably more then you will ever need) power on those ports. I've seen 400 HP on a dyno made with these ports.

I don't recommend a bridgeport as your first port job. For one thing, the stock ECU and stock turbo is totally inadaquate to support something like that. Which also means going to an FMIC and making major fuel mods.

A streetport can be run with the stock ECU and minimal fuel mods. You can also retain the stock turbo.

Rob B.

Thanks for the advice, aaron, ill look into that. And youre most likely right, sircygnus...but right now, as money's going, it looks like im gonna need to keep the stock turbo and fuel system for a while...on the swap im prob gonna need a new radiator and intercooler as it is (v-mount if im lucky) and that will prob help things out a bit.
thanks
-Rob