Went back to the dyno today....
08-30-2006, 01:58 PM
#91
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"Please remember that we could EASILY (yes easily) make over 750 RWHP, but at the expense of a decent powerband. We want 400 RW BEFORE 4000 RPM."
must have missed this point in the "my goal towads the end of (last) year 600RWHP" thread....
must have missed this point in the "my goal towads the end of (last) year 600RWHP" thread....
08-30-2006, 02:51 PM
#92
Nordschleife Master
Originally Posted by MPD47
Jim, the car pictured makes 800whp on pump gas (93 octane). It also just ran a 9.95 @ 147.5 in the 1/4 mile, on pump gas.
(I posted here about it)
08-30-2006, 02:57 PM
#94
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Originally Posted by MPD47
I remember 
I'm hoping my S38B36 build is half as good. I love the PurePF stuff.
I'm hoping my S38B36 build is half as good. I love the PurePF stuff.I know about this car.
He is starting to convince me to use the twin-cam.
Anyone know how big I can make those 2 intake valves??
08-30-2006, 03:00 PM
#95
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Originally Posted by special tool
Well - looks like the die is cast.....
The BMW project will have to wait a few months because the next Vitesse turbo for my car is already in production.
The goals will be:
-WELL over 600 RWHP
-WELL over 600 RWTQ
-Over 400 RWTQ BEFORE 4000 RPM
-2.5 8 valve engine with Motronic controls
Please remember that we could EASILY (yes easily) make over 750 RWHP, but at the expense of a decent powerband. We want 400 RW BEFORE 4000 RPM.
This may sem trivial, but it is not.
SOOOOO - would anyone like to bet against us?? Speak up please.
The BMW project will have to wait a few months because the next Vitesse turbo for my car is already in production.
The goals will be:
-WELL over 600 RWHP
-WELL over 600 RWTQ
-Over 400 RWTQ BEFORE 4000 RPM
-2.5 8 valve engine with Motronic controls
Please remember that we could EASILY (yes easily) make over 750 RWHP, but at the expense of a decent powerband. We want 400 RW BEFORE 4000 RPM.
This may sem trivial, but it is not.
SOOOOO - would anyone like to bet against us?? Speak up please.
08-30-2006, 03:04 PM
#96
TMS he's talking about the BMW engine.
Jim, you cannot use the S38 DOHC head on anything other than the S38 block. Unless you machine an M30 or M88 block to have the different oil drains (a couple thousand dollars, waste of cash). You'd be best off chatting with Andreas about his build (there is a good thread on bimmerforums too). Your power gains are a bit optimistic, but hey, gotta have something to shoot for. The M5 engines dont exactly go for cheap or come up often either. I got mine for $500 from a friend of a friend though
Jim, you cannot use the S38 DOHC head on anything other than the S38 block. Unless you machine an M30 or M88 block to have the different oil drains (a couple thousand dollars, waste of cash). You'd be best off chatting with Andreas about his build (there is a good thread on bimmerforums too). Your power gains are a bit optimistic, but hey, gotta have something to shoot for. The M5 engines dont exactly go for cheap or come up often either. I got mine for $500 from a friend of a friend though
08-30-2006, 03:05 PM
#98
Nordschleife Master
Originally Posted by special tool
Over 400 RWTQ BEFORE 4000 RPM
If discussing powerband I think a suitable formula is to use average power (not tq) within say the top 2500 rpm.
08-30-2006, 03:07 PM
#99
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Thread Starter
Originally Posted by Tms951
You're joking right? If not I'll bet against you. You didn't even make 400@4k this time and next time you plan on upping the low and the high end? This is physics not black magic, unless you plan on spraying to get it spooled you have no chance. As is you have lost 150tq from 4500rpm to 6000rpm, in my mind that it ugly. You need a bigger turbine housing and maybe wheel to break 600, but this is only going to drop your power a 4k rpm. I wish you luck as you will need it.
I never joke about horsepower.
MPD47- talking about the 951
But, yes I would use the entire M5 engine. With Motronic, of course.
08-30-2006, 03:20 PM
#101
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If you look at the number of hits and count how many adds have been done since yesterday (and maybe also count the word "vitesse" if you are thinking evel) theards like this start making sense. At least they find a lot of interest. So if you don´t reach the targets just post it is unbelivably easy to reach it and rise it further. My suggestion for the next thread:
"my goal : 1000RWHP with stock components starting from 2000rpm till redline"
That would be in fact fantastic but also unrealistic. I would be more happy about a thread called:
-YESTERDAY I reach 600RWHP and this is what I have done to achive it"
"my goal : 1000RWHP with stock components starting from 2000rpm till redline"
That would be in fact fantastic but also unrealistic. I would be more happy about a thread called:
-YESTERDAY I reach 600RWHP and this is what I have done to achive it"
08-30-2006, 03:24 PM
#102
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Thread Starter
Originally Posted by tedesco
If you look at the number of hits and count how many adds have been done since yesterday (and maybe also count the word "vitesse" if you are thinking evel) theards like this start making sense. At least they find a lot of interest. So if you don´t reach the targets just post it is unbelivably easy to reach it and rise it further. My suggestion for the next thread:
"my goal : 1000RWHP with stock components starting from 2000rpm till redline"
That would be in fact fantastic but also unrealistic. I would be more happy about a thread called:
-YESTERDAY I reach 600RWHP and this is what I have done to achive it"
"my goal : 1000RWHP with stock components starting from 2000rpm till redline"
That would be in fact fantastic but also unrealistic. I would be more happy about a thread called:
-YESTERDAY I reach 600RWHP and this is what I have done to achive it"
-WELL over 600 RWHP
-WELL over 600 RWTQ
-Over 400 RWTQ BEFORE 4000 RPM
-2.5 8 valve engine with Motronic controls
Okay, okay. 1,2 and 4 - DEFINITELY.
3......... WE'LL SEE.
08-30-2006, 03:32 PM
#103
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Originally Posted by MPD47
The BMW Motronic is even worse than the 951. Why handicap yourself.
What do you mean by that? It's the same Motronic version...
08-30-2006, 03:35 PM
#104
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Originally Posted by fast951
What do you mean by that? It's the same Motronic version...
TT is going to come on here and sweep through this room like Bruce Lee.....
08-30-2006, 04:14 PM
#105
Three Wheelin'
Originally Posted by Tms951
The A/R of the compresser is .60, but with the kkk hot sides from what I know there are not different A/Rs they are sized #6, #8, #10. If you step up to a full T4 then there are different A/Rs. I have a Super 75 with a T4 hotside with a .58A/R.
The 67mm is a measurement taken from the compresser wheel, I think think it refers to the width of the inducer of the wheel, though it seems more like 80mm looking at my turbo? Hopefuly some one will chime in with where exactly this measuremnt comes from.
The 67mm is a measurement taken from the compresser wheel, I think think it refers to the width of the inducer of the wheel, though it seems more like 80mm looking at my turbo? Hopefuly some one will chime in with where exactly this measuremnt comes from.
That's still a big turbo for a 2.5l, though you get mad props for having the cojones to put a manly turbo on that motor! 
Even though the T4 .58ar housing will be restrictive for max hp, that turbo could probably still break 600rwhp above ~25psi.