bought my turbo II yesterday and it needs a motor. but dunno what a good place is to go to. pettit? pineapple? any other places that would be good? also, dunno the differences between porting jobs on these engines but i'd like to get a decent port job that's still streetable. shooting for AT LEAST 11's in the 1/4 with all the additional mods but need a good engine. have to kinda know about my engine choice now cause i leave for school on the 10th for 6 months and need my engine done up while i'm gone. thanks for any info.....
scott

 

Do it yourself. You can even street or bridgeport it yourself. I believe mazdatrix sells porting templates

 

Not everyone has the know-how or will to rebuild and engine drox. I know I don't myself.

Go with pineapple if you have the money. I have never heard one single bad comment about them.

 

yeah, i'd do it myself but 1., i'll be gone for 6 months and need the motor ready to drop in when i get back and 2.) i've never touched a rotary before and want it done right. don't want it to be a learning experience.

anyone have any idea what port job would be best? cause i AM getting it ported. also, what about lightening the rotor's? anyone have any experience with that? thanks!
scott

 

Hey there V8,
Well to your question there are several questions that you first have to answer for your porting question. Such as, how much money are you willing to spend? How streetable do you want this to be? Is it a daily driver?
You will most likely want to go with a street port. An extended street port is a way to have large gains in power without compromising drivability. Not only will it give you a great power boost, but it will retain a lot more driveability. Plus a longer life expectancy. But when you do this you have to upgrade everything else too. If you want though you can go for a bridge port. Its life expectancy i've been told is around 30,000 miles, and it has to idle around 3,000 rpm i believe. Either porting job will increase the noise level of your car as well.
As for lightening the rotors, the 89-91 rotors were lighter, but i have heard that for large amounts of boost, you want to stick with the heavier rotors(87-88) because they have lower compression ratios than their 89-91 counterparts.

But i urge you to buy a fuel system to support this newly ported motor and to ALLOW IT TO BREAK IN. If you don't you just wasted a few grand.

 

I think you should go with atkins rotary

 

Hey Revinrx 7,

I bet that Cannondale bike is more reliable than your 7. So which one is your winter beater?

 

hahaha thats a good one, I wouldn't doubt it either

 

I recommend Pineapple Racing

 

Ill throw my recomendation to Kevin Landers of http://www.rotaryresurrection.com . Not only is he a good guy, he's excellent with the triangles

 

okay, to give ya'll an idea, here's my goals...
shooting for AT LEAST 11's in the 1/4 if not better. mods within about a years time will follow.....

T4 60-1 turbo (looking it over. may go with a GT35/40)
greddy front mount
undrive pulley's
walbro 255 LPH high flow pump (which i already own from my eclipse. used maybe 500 miles)
sard bov (which i also already own)
haltech (more than likely)
apexi dual exhaust, mid pipe, and downpipe
and all my guages and reliabilty mods and a few other small things not mentioned.....

a/c, power steering, and air pump is already removed from the car. wanna keep it streetable but with track time as well for drag racing. no auto-x concerns here.
so would just a street port be good for me? or would ya'll advise, recommend something else bigger? would like something somewhat reliable. should i not worry about lightening the rotors then? thanks for the input.....
scott

 

I believe you are going to need a larger pump for 11s.

 

bigger than a high flow 255 lph?!?!?!?!? jeese, these things support up to around 600 horses on a dsm with four 720 cc injectors.....whcih was my original project. dang, how much fuel does the car need?!?!?!? if i need bigger than that, what would ya suggest?

for you guys going with rotary resurrection, how long have you guys had your motors? i like the thought of $1400 for a "ported" motor. can you guys give some more feedback on them? customer service, quality, etc.? if i get some good feedback on these guys i'll probably go with them more than likely. $1400 isn't much at all!!!!! i could careless about the warranty anyway if it's a good quality motor.

...and to think i cancelled my dsm project and went with a 7 for the lower cost. $1400 ported engine compared to a $7k stroker motor for the eclipse and would still need intake manifold, etc. etc. etc. happy i went with a 7....

 

Well for 11s or lower you are looking for 400rwhp or more, correct? I believe the RP pump is good for 500+rwhp:

www.rx7.com

 

okay, well how much are ya trying to say a high flow walbro 255 lph pump is good for? i was shooting for 600 horsepower with the eclipse project and everyone said that that was more than enough for what i had in mind. 600 horsepower in an awd eclipse is good for 9's in the 1/4. so what am i missing here? besides maybe the fact that an RX-7 flows a bit more than piston engines i guess but still, for maybe 400 horsepower, just doesn't seem like it would be at it's limit. maybe it's my lack of knowledge with the 7's for now though. i dunno.....be gentle with my lashings because of my lack of knowledge

 

Your also going to need larger injectors, and a modified rail to accomodate anything larger than 720's on the secondary which you should probably do.

 

yeah, was already planning on the injectors and all. just didn't think i'd need a bigger pump though. spoke to kevin landers online last night for about an hour or so. think i just may get an engine from him here shortly. could get 2 engines from him for almost the same price it would cost me to get 1 engine from anywhere else. and i probably will be getting 2 engines just so that i'll have a spare so it would work out better for me. not worried about a warranty anyway. thanks for the info guys! laters!
scott

 

saw this on e-bay for an RX-7. says it's good for up to 500hp. anyone care to differ with that? cause i'm not throwing away over $200 for a pump i don't need if my 255lph pump will do. and if you wanna argue about the horsepower range for one of these things, please gimme some proof.
scott

**Brand New** Walbro 255lph High Pressure Intank Fuel Pump with Install Kit
Quantity : 1
Part Number :#GSS341/400-850
Keep your engine supplied with enough fuel with higher boost and larger turbos!
This pump easily good for 500HP on the stock fuel lines and upgraded injectors.
Recommended for all cars wanting to run higher boost levels .
Do not let the stock fuel pump cause damage to your modified car...upgrade your fuel pump before (or at the same time) you upgrade your turbo!
Price includes install kit
For use with Mazda
Compatible with model :
86-88 RX-7