So for porting, any flow numbers on the head I should look for? For 250hp do I need to get a g head or is my swirl head sufficient? I have the 2-piece intake, is there someone in the Oregon area who's known to do a good job? I've never ported so I don't wanna ruin it and I don't wanna take it to joe blow and pay someone else to ruin it either.
If you were to bolt on a nice freshened G-head with good valve job you already have about a 15% flow increase, but it would need a good calibration to take full advantage.
A nice mild ported 782 could give you the same result on stock electronics, but where do you find a machine shop that can be trusted to even machine a mtr Correctly, never mind port a head without mucking it up :(
So what I'm seeing is two different solutions to the problem. To go back to my intended usage of this car,
Which approach would yield more streetable power? Again, this is meant to be a street car first.
And, which approach would make the car more reliable?
I know all about the myth of fast, cheap, and reliable. What I'm not looking for is the solution that'll be reliable at my power goal. What I meant by as cheap as possible is I don't want to just throw money at it for the sake of spending money. I'd like each purchase to have a purpose in furthering me towards 250 reliable hp.
Back in the day, 9/10 wanted exactly what you are asking for. Here's what we did;
Upgrade to MP S60 SMEC or FWD stage 5, 3 bar calibration, AFPR,+40 inj's, 3 bar map and Walbro fuel pump, new fuel filter, 30psi boost gauge and AFR gauge to monitor WOT boost.(we had DRBII to monitor knock when tuning)
Obviously look everything over and make sure everything is up to date and working properly. (replace worn timing belts, dissy's ect)
Grainger turbo and dial in WOT AFR's to desired boost level. (14-25psi depending on octane)
At least 2 1/2 exhaust with 2 1/2 S/V. Some removed cat, some ran full open with cherry bomb.
That was the most simple recipe, basically an instant high 13, mid to low 14 sec car in a Daytona @ 20psi on street tires.(depending on driver and traction)
If you had an 88/89, drive in on a Friday and you would be cruising for Sunday night.....
From there some would;
Add 2 piece intake and or ported 2 piece intake with 52mm TB.
Move I/C up front out of heat of E/C or upgrade I/C at same time.
Run slightly larger hybrid turbo for more power on less boost.
Go to full 3" exhaust ect ect (the list get's bigger and pricier from there, ported heads, cam, bigger turbo's, forged internals)
I usually wouldn't recommend S60 turbo anymore, because there are just better alternatives, but most want 300+HP.
So S60 or small Enforcer bolt-on would be exactly what your looking for as any larger and you start to loose that street car appeal,