Single Turbo RX-7's Questions about all aspects of single turbo setups.

recepie for 10sec FD?

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Old 10-23-09, 03:17 PM
  #26  
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Originally Posted by seandizzie
Will the .81 a/r be a little too small and create more exhaust back pressure than a larger a/r? Not saying it won't work, but I am of the impression that a larger a/r is rotary friendly. .
yep.
you prob wont be able to make alot of power with that small of a A/R since the greater back pressure will limit how much boost you can run. or at least boost that makes more power.
Old 10-23-09, 03:28 PM
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dudeman. turboR1 made that hp on c16 and e85. I see nothing wrong with that.
Old 10-23-09, 03:44 PM
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So you think e85 and c16 makes an additional 75hp over the norm at 15 psi and stock ports over a pump fuel car? So if all these other guys running gt35's just switched fuels they would magically pull an extra 50-75 hp? Sorry thats rediculous
Old 10-23-09, 03:51 PM
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Originally Posted by turboR1
yep.
you prob wont be able to make alot of power with that small of a A/R since the greater back pressure will limit how much boost you can run. or at least boost that makes more power.
Yea that is true but went with this turbo since i do alot of street driving and some drag but wasnt looking for huge#'s. Just wanted a 10sec car with full interior a/c and crap and Ray recommended it. I could always go bigger if i wanted to go faster but i would go with a BW or a billet and think BW can build them up from what you have for a reasonable price. But alot of companys are getting the billet wheels and heard rumors of a Garret or BW billet turbo coming out and they flow even better. Think high 10's are fast enough right now, i am not even trying to keep up with any supras because they are just retarded.
Old 10-23-09, 04:02 PM
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Originally Posted by Dudemaaanownsanrx7
So you think e85 and c16 makes an additional 75hp over the norm at 15 psi and stock ports over a pump fuel car? So if all these other guys running gt35's just switched fuels they would magically pull an extra 50-75 hp? Sorry thats rediculous
Depends on the tune, and since he is running c16 or e85 can tune for more power then most guys here with a 35r and pump gas.
Old 10-23-09, 04:15 PM
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No the difference is you're street ported which is good for about 15-20 percent more power. I wouldn't have any problem accepting it on a ported engine. I also dont have a problem accepting high hp stock port engines with the right turbo. But that setup does not add up and there isnt really any way around it. You can only get so much power out of so much air. More air into and out of the engine = more power. When you know the variables of port size (stock) and turbo size (gt35r) it's pretty simple to get an estimate of what to expect.
Old 10-23-09, 04:27 PM
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Originally Posted by Dudemaaanownsanrx7
No the difference is you're street ported which is good for about 15-20 percent more power. I wouldn't have any problem accepting it on a ported engine. I also dont have a problem accepting high hp stock port engines with the right turbo. But that setup does not add up and there isnt really any way around it. You can only get so much power out of so much air. More air into and out of the engine = more power. When you know the variables of port size (stock) and turbo size (gt35r) it's pretty simple to get an estimate of what to expect.
Magic sauce. It happend so there is the proof it can be done. How many guys with those 35r's are running race gas and trying to make as much power as they can out of them?
Old 10-23-09, 04:45 PM
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Originally Posted by turbo10th
Magic sauce. It happend so there is the proof it can be done. How many guys with those 35r's are running race gas and trying to make as much power as they can out of them?
There is only proof that someone said it was done, and beyond that there is only proof that the dyno said it was done. Ever hear the expression believe nothing you hear and half of what you see?

Usually when you try to make as much power as you can you up the boost. If he was tuning to 23 psi I can't imagine he was bothered ringing every last drop of power at 15 psi. But assuming he was, race gas in not magic, e85 is not magic. Some fuels, Q16 and nitromethane for example contain considerably higher oxygen content that makes additional power. The fuels listed would not have this effect. That means the e85 would have to make 70 or so hp from it's cooling effects, leaning the car out to 13:1 and running advanced timing. In this case I would buy an additional say 30 hp, but not 70.

You can believe what you want, but I've been comparing setups and tuning these cars for too long to just accept an absurd number just because someone said it happened. And telling the OP he will make 500+ on a gt35 with stock ports would be a lie, because even if someone did do it, it's more likely he will fall in the 99% that didn't and couldn't do it. Since the OP wants to make it into the 10's without too much effort there is no sense in telling him sure you could do it with such and such because this one guy claimed he did, or if your fortunate enough to be the lucky few you can do it with this. It makes much more sense to tell him what the majority of people can expect and if he exceeds that then great, if not he won't be set up for disappointment
Old 10-23-09, 05:22 PM
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I was just saying he did make those numbers but like you said he should go with a turbo that will get him to that power easily rather than pushing it to the limit and only on race gas setup. But what i was getting at is a BW s362 would be a good choice(if you street drive and not looking for more than the 500rwhp range) since on a mild tune with pump and meth 500rwhp should be no problem(and lag wont be as bad as a huge turbo at the same power level) just get a bigger a/r like my friend with the GTI. He got his from bullseye. Or if you want more BW has the s366 and it goes on. Just for the eficiency sake is why i am saying BW over Garret and the warranty you cant beat it. Just run a big wastegate because as my friend found out a 38mm will not cut it lol. Think mines a 44mm and works great.
Old 10-23-09, 07:12 PM
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Originally Posted by Dudemaaanownsanrx7
There is only proof that someone said it was done, and beyond that there is only proof that the dyno said it was done. Ever hear the expression believe nothing you hear and half of what you see?

Usually when you try to make as much power as you can you up the boost. If he was tuning to 23 psi I can't imagine he was bothered ringing every last drop of power at 15 psi. But assuming he was, race gas in not magic, e85 is not magic. Some fuels, Q16 and nitromethane for example contain considerably higher oxygen content that makes additional power. The fuels listed would not have this effect. That means the e85 would have to make 70 or so hp from it's cooling effects, leaning the car out to 13:1 and running advanced timing. In this case I would buy an additional say 30 hp, but not 70.

You can believe what you want, but I've been comparing setups and tuning these cars for too long to just accept an absurd number just because someone said it happened. And telling the OP he will make 500+ on a gt35 with stock ports would be a lie, because even if someone did do it, it's more likely he will fall in the 99% that didn't and couldn't do it. Since the OP wants to make it into the 10's without too much effort there is no sense in telling him sure you could do it with such and such because this one guy claimed he did, or if your fortunate enough to be the lucky few you can do it with this. It makes much more sense to tell him what the majority of people can expect and if he exceeds that then great, if not he won't be set up for disappointment


if you say so and this is why youll stay in that 99% group.
Old 10-23-09, 10:08 PM
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Well whatever percent I fit into is what percent I fit into. My car is already stupid fast, and makes more power then i need, with a turbo that still has more in it. I honestly haven't even dynoed this setup. Why? Because i don't care. I know it's over 500 hp, is it 530? 550? 575? Who knows, but it's reliable, and **** your pants fast.
Old 10-24-09, 04:04 AM
  #37  
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my car picked up 55rwhp just by changing from pump fuel to e85 + better boost response, same dyno session.
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