twin turbo - one bov?
Here is the most recent setup information, if you are interested.
http://img689.imageshack.us/i/forged...ormatted2.pdf/
Originally Posted by Blackbird CPV35
Frankly, if you are sitting here asking all of these basic questions about this custom setup and the shop cant answer them then you should probably think twice about having them build your TT kit
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Joined: Jun 2007
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From: NC
That was with a single pump and a bad transmission. Pro-EFI (Jason) called me yesterday to let me know that he has it at 25PSI and about 700WHP. It was pooring yesterday, so he didn't drive it to the dyno, but the CAN gauge for the Pro-EFI has an approximate WHP read out that has been proven very accurate. He also has been tuning and racing high HP cars for many years. I will probably hit the track before I worry about a dyno. The trap will give us a more accurate WHP number than a dyno.
Also, for reference, I do have dynos at 693WHP with a bad transmission and a single walbro at 22PSI, but the transmission was slipping so I don't consider the dyno to be reliable. That's why I've only posted my 14PSI info previously.
Also, for reference, I do have dynos at 693WHP with a bad transmission and a single walbro at 22PSI, but the transmission was slipping so I don't consider the dyno to be reliable. That's why I've only posted my 14PSI info previously.
693whp on a single walbro pump???? forreal.................all i have to say is the snozberries taste like snozberries
Here is the dyno chart. Like I said, the transmission was supposed to be built, but SGP actually ripped me off and sent me my stock transmission back (see SGP Racing thread). Because it was stock, it was slipping on the dyno. I do not consider this to be a reliable dyno. I only shared the info, because it jives with my new numbers from Pro-EFI, using their CAN gauge to measure WHP.
before you say something dumb, maybe you should search. Cass007 made over 643 on a dyno dynamics with a single pump. Thats ~700 on a dynojet.
https://my350z.com/forum/7419622-post1113.html
So it can be done.
https://my350z.com/forum/7419622-post1113.html
So it can be done.
hmm y you getting a custom one when you get a gtm turn key kit... Also dude if i was in your position i would be thinking. Well 2 turbos hmm 2bov hmm makes sense to me. Frankly do it right,do it right the first time!
O,also 9psi would get you closer to 500hp, 6.5 or so will give you the lower 400hp. Dude research!
O,also 9psi would get you closer to 500hp, 6.5 or so will give you the lower 400hp. Dude research!
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Joined: Jun 2007
Posts: 295
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From: NC
i believe a single walbro can't make that kind of power safely or consistently. If those two that power legitamately then they are the exception not the rule. If you do some research you will find more info that supports that fact than the latter. Most of the top shops in this community will tell you that if you want to make 600whp or higher you need two pumps. I probably could turn up the boost on mine and push A/F ratio lean as hell and make that kinda power with one pump but the car wouldn't get two miles down the road until the heads started making their way north of the block. If you don't believe me ask Phunk (Charles) of CJ Motorsports and he will tell you with a really really good fuel system you could push a single pump to 550whp maybe 575whp tops. If you need more than that ask Sharif (forged) or Sam (GTM) and they will tell you the same thing. Then after that if you still don't believe why don't you ask Alberto when he changed his setup around about a year or so ago and started making into the 6xxwhp how many pumps he is running and I gaurantee you its more than one, i would say its probably two. So in closing i maintian my first statement when i said the snozberries taste like snozberries.
i believe a single walbro can't make that kind of power safely or consistently. If those two that power legitamately then they are the exception not the rule. If you do some research you will find more info that supports that fact than the latter. Most of the top shops in this community will tell you that if you want to make 600whp or higher you need two pumps. I probably could turn up the boost on mine and push A/F ratio lean as hell and make that kinda power with one pump but the car wouldn't get two miles down the road until the heads started making their way north of the block. If you don't believe me ask Phunk (Charles) of CJ Motorsports and he will tell you with a really really good fuel system you could push a single pump to 550whp maybe 575whp tops. If you need more than that ask Sharif (forged) or Sam (GTM) and they will tell you the same thing. Then after that if you still don't believe why don't you ask Alberto when he changed his setup around about a year or so ago and started making into the 6xxwhp how many pumps he is running and I gaurantee you its more than one, i would say its probably two. So in closing i maintian my first statement when i said the snozberries taste like snozberries.
do some search and ull find allot of guys here did 630whp with a single pump on 93oct
even SAAAAAAAAM (GTM) he did 682whp with a single pump.
search search search
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Joined: Oct 2007
Posts: 1,891
Likes: 1
From: Chicago
I dunno bout this, unless its a over voltaged pump.
Or let me restate. I think you could make the power, on the dyno.....but if you tried driving around like that you will see what melted metal looks like quickly.
And yes cass was with meth...so nut JUST a single pump.
More people should be like me and have 3 Pumps!!!!
Tom
Or let me restate. I think you could make the power, on the dyno.....but if you tried driving around like that you will see what melted metal looks like quickly.
And yes cass was with meth...so nut JUST a single pump.
More people should be like me and have 3 Pumps!!!!
Tom
i believe a single walbro can't make that kind of power safely or consistently. If those two that power legitamately then they are the exception not the rule. If you do some research you will find more info that supports that fact than the latter. Most of the top shops in this community will tell you that if you want to make 600whp or higher you need two pumps. I probably could turn up the boost on mine and push A/F ratio lean as hell and make that kinda power with one pump but the car wouldn't get two miles down the road until the heads started making their way north of the block. If you don't believe me ask Phunk (Charles) of CJ Motorsports and he will tell you with a really really good fuel system you could push a single pump to 550whp maybe 575whp tops. If you need more than that ask Sharif (forged) or Sam (GTM) and they will tell you the same thing. Then after that if you still don't believe why don't you ask Alberto when he changed his setup around about a year or so ago and started making into the 6xxwhp how many pumps he is running and I gaurantee you its more than one, i would say its probably two. So in closing i maintian my first statement when i said the snozberries taste like snozberries.
I do agree that my new setup with twin pumps is more reliable and safer for that WHP level. Also, I started by saying that I had switched to twin pump due to fuel delivery issues. It just wasn't always consistent.
With that said, you cannot simply dismiss several people who have obtained around 700WHP with a single pump as ********, just because some others couldn't reach that with inferior setups. You could just as easily (and pointlessly) reference an all stock setup that added a Walbro 255 and prove that they couldn't reach 300WHP! The point is not who COULDN'T do it with their setup, the point is those that HAVE done it with their setup. That proves it is possible with the right setup. Show me someone with the following setup that COULDN'T reach 700whp:
8.5:1 compression built LONG block
All head work done
750cc injectors (or larger)
Pro-EFI 48 PIN EMS
Tuned on C16
S1 cams (or better)
Greddy TT Kit at 22+ PSI
I don't believe that anyone with that setup has been below 700WHP.
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Joined: Jun 2007
Posts: 295
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From: NC
my point is as i stated earlier that you can make that # for like one pass on a dyno but you won't be albe to drive the car down the street without the engine coming apart or make multiple pass on the dyno or at the strip. the setup would be to inconsistent as you have already stated...........regardless what # you get on the dyno if you can't drive down the street it doesn't count its just pissing in the wind
my point is as i stated earlier that you can make that # for like one pass on a dyno but you won't be albe to drive the car down the street without the engine coming apart or make multiple pass on the dyno or at the strip. the setup would be to inconsistent as you have already stated...........regardless what # you get on the dyno if you can't drive down the street it doesn't count its just pissing in the wind
If you said that it wouldn't be consistent and reliable fuel delivery when your gas tank is low on fuel, we'd agree, since that is the only issue I faced.
I'm running 25PSI now. Got a problem with that? Since you are the almighty expert, please contact Jason Seibel from Pro-EFI and explain to him why his DECISION (all his) to set my car at 25PSI was so poor. Or you can just explain it to me, but I will be a hard sell. I know Jason's experience and expertise. I don't know yours. Maybe you design tuning software, tune, and race high HP cars for a living as well. Probably not.
How is running a higher octane fuel relevant to the discussion about a single pump? Higher octane fuel (C16, for example) allows the tuner to be more aggressive with the timing and other aspects of the tune, since it is safer. Your opinion that a Walbro 255 can't handle 700WHP is FAIL, since it is proven wrong. Are you now stating that a Walbro 255 suddenly becomes TWO Walbro 255's if you use higher octane fuel??? Somehow the fact that I used high octane fuel negates the fact that I ran the 1/4 almost a dozen times with almost 700WHP with a single Walbro 255?
Explicame, por favor!