grey99max building another 3.5
03-24-2009, 11:30 AM
#41
My guess is that because Cosworth produces parts and engines for many different makes and models in other countries, the engine dyno numbers are the best common reference for power. They certainly can't build an engine or major component, install it in all cars that use that part, and do a chassis dyno for each of the cars... although that would make for interesting reading and I would like the job of driving all of those cars!
Converting crank HP to wheel HP also depends on several things, but using 20% HP loss from crank to wheel is a good guess. 400 crank HP is 320 WHP, for instance, using the 20% number, or 405 dyno WHP is 506 crank HP. There is no one number for drivetrain losses - too many variations in drivetrain, you know.
Converting crank HP to wheel HP also depends on several things, but using 20% HP loss from crank to wheel is a good guess. 400 crank HP is 320 WHP, for instance, using the 20% number, or 405 dyno WHP is 506 crank HP. There is no one number for drivetrain losses - too many variations in drivetrain, you know.
I hope I'm not misinterpreting the calculations here.
Last edited by Deckdout2; 03-24-2009 at 11:33 AM.
03-24-2009, 11:37 AM
#42
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Of course. I see exactly what you're saying put in those perspectives. In other words is it safe to assume that these numbers at the wheels would net under 300whp going off that particular equation give or take multiple setups?
I hope I'm not misinterpreting the calculations here.
I hope I'm not misinterpreting the calculations here.
03-24-2009, 12:37 PM
#44
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No, you're not getting my new shiny engine - no way. Of course there is this old VQ35 sitting in the car right now that may be surplus.... just let me dyno 450 WHP first.. I think a 235-shot should handle that.
Last edited by grey99max; 03-24-2009 at 12:40 PM.
03-24-2009, 02:13 PM
#45
That's what a LOT of people are doing.
www.maxus09.com
June 26-28, 2009 in Washington, DC
The Drag Showdown will be at Maryland International Raceway on Sat, June 27th. We have rented out the entire track and we have it all to ourselves!
The drag classes and rules are still being compiled. I am the one in charge of all that. So let me know if you have any questions and I'll do my best to answer them.
But, go ahead and count on you qualifying for the "Maxima Unlimited" class where anything goes as long as it looks like a Maxima on the outside and you meet the normal IHRA safety rules that the track will enforce.
www.maxus09.com
June 26-28, 2009 in Washington, DC
The Drag Showdown will be at Maryland International Raceway on Sat, June 27th. We have rented out the entire track and we have it all to ourselves!
The drag classes and rules are still being compiled. I am the one in charge of all that. So let me know if you have any questions and I'll do my best to answer them.
But, go ahead and count on you qualifying for the "Maxima Unlimited" class where anything goes as long as it looks like a Maxima on the outside and you meet the normal IHRA safety rules that the track will enforce.
03-24-2009, 02:24 PM
#46
03-24-2009, 02:41 PM
#47
The IHRA rule book states that if you are 11.49 or faster, a roll bar must be installed. I will raise these questions to the track to see what would happen if one of the cars cracks the 11.49 barrier.
Also, make sure you follow the normal helmet and fire jacket rules. I will make sure those rules are printed in the Drag Showdown rules once I confirm everything with the latest IHRA rulebook.
03-24-2009, 03:27 PM
#48
I just looked over the 2009 IHRA rulebook.
A SN 90 or newer helmet is required for 13.99 or faster cars.
When you hit 11.49 or faster, a SN 95 or newer helmet is required along with a minimum 3.2A-1 jacket and 6 point roll bar. A full cage isn't needed until you hit 135mph.
I just thought I'd confirm a few things.
A SN 90 or newer helmet is required for 13.99 or faster cars.
When you hit 11.49 or faster, a SN 95 or newer helmet is required along with a minimum 3.2A-1 jacket and 6 point roll bar. A full cage isn't needed until you hit 135mph.
I just thought I'd confirm a few things.
03-24-2009, 06:23 PM
#49
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I just looked over the 2009 IHRA rulebook.
A SN 90 or newer helmet is required for 13.99 or faster cars.
When you hit 11.49 or faster, a SN 95 or newer helmet is required along with a minimum 3.2A-1 jacket and 6 point roll bar. A full cage isn't needed until you hit 135mph.
I just thought I'd confirm a few things.
A SN 90 or newer helmet is required for 13.99 or faster cars.
When you hit 11.49 or faster, a SN 95 or newer helmet is required along with a minimum 3.2A-1 jacket and 6 point roll bar. A full cage isn't needed until you hit 135mph.
I just thought I'd confirm a few things.
03-25-2009, 08:46 AM
#55
As soon as I am clear on the details of this particular track, I will probably start an Official Drag Showdown thread in the MAXUS forum in order to answer any questions people have.
03-25-2009, 09:24 AM
#58
You can do that. But I doubt you will qualify for the street class, which will probably be just NA with mufflers, street tires, and full interiors. The rules aren't official just yet, but more than likely, go ahead and count on you being in the all out Unlimited class that allows any power adders and slicks.
03-25-2009, 04:02 PM
#59
Wow someone with a Maxima actually bought Cosworth heads! Never thought I'd see that anytime soon. Must be nice to have cash available... my 3.5 is on hold because of financial issues, I may not be around much this year... 
Hope your build turns out well Harold.
Hope your build turns out well Harold.
03-25-2009, 04:41 PM
#60
i never thought anybody would buy those heads
03-25-2009, 07:41 PM
#61
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Getting back on track, the Cosworth cams got here today, and I picked up the timing covers, upper oil pan, and LIM which I had glass-bead-blasted. These look pretty good.
One of the Cosworth cams:
Glass-Blasted covers:
http://i48.photobucket.com/albums/f2...9/DSCN0776.jpg
http://i48.photobucket.com/albums/f2...9/DSCN0777.jpg
oil pan
http://i48.photobucket.com/albums/f2...9/DSCN0778.jpg
http://i48.photobucket.com/albums/f2...9/DSCN0779.jpg
. Sorry to hear about your problems, Dandy - these days, there's a lot of people up and down.... you'll be back. Heck, I was away from racing for about 30 years and it took me three years to remember the simple stuff..
One of the Cosworth cams:
Glass-Blasted covers:
http://i48.photobucket.com/albums/f2...9/DSCN0776.jpg
http://i48.photobucket.com/albums/f2...9/DSCN0777.jpg
oil pan
http://i48.photobucket.com/albums/f2...9/DSCN0778.jpg
http://i48.photobucket.com/albums/f2...9/DSCN0779.jpg
. Sorry to hear about your problems, Dandy - these days, there's a lot of people up and down.... you'll be back. Heck, I was away from racing for about 30 years and it took me three years to remember the simple stuff..
03-26-2009, 04:51 AM
#62
Looking great Harold, guess I had better watch my a$$.
Be interesting to see what it will do N/A as well, should be a screamer.
I'm like Dan in the financial world, especially being on a fixed income. However my biggest expense is replacing the engine which is getting cheaper every year.
Be interesting to see what it will do N/A as well, should be a screamer.
I'm like Dan in the financial world, especially being on a fixed income. However my biggest expense is replacing the engine which is getting cheaper every year.
03-26-2009, 07:04 AM
#63
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Looking great Harold, guess I had better watch my a$$.
Be interesting to see what it will do N/A as well, should be a screamer.
I'm like Dan in the financial world, especially being on a fixed income. However my biggest expense is replacing the engine which is getting cheaper every year.
Be interesting to see what it will do N/A as well, should be a screamer.
I'm like Dan in the financial world, especially being on a fixed income. However my biggest expense is replacing the engine which is getting cheaper every year.
The VQ35 is quite remarkable for making big HP with a stock engine, or a stock lower end at least (like me). I'm building this "monster motor" because I can, while I can still build stuff and go racing. Being 65, I'm not sure how much longer I can keep going, what with medical issues and all...
I'm hoping for some NA increases, of course, but except for the ported heads there's not much there that will raise NA HP with 6500 RPM shifts. The goal is to build an engine that can be pushed much harder than the stock engine without blowing up - this one has block parts rated at least 1000 HP, and a 10,500 RPM valve train, so there is room for experimenting for more power (try 300-shot). I selected the ZK2 cams because of the wide torque band, which should work well with nitrous. I know you're a believer on spraying and shifting at low RPMS - but "what if" I can spray more at higher RPMS - will this help extend the power band to 7500-9000 ???
Several suppliers are very interested on how this engine performs - especially at the higher RPMS. The intake decision is still up in the air - I use a SSIM and stock MAF and pathy TB for now, but I'll probably have to upgrade intake parts if I shoot for 8000-9000 shifts. I dunno yet - but it's gonna be fun. ---and if I replace just the pistons, I can go the the dark side and turbo the engine--- if I can figure that out...
03-26-2009, 07:16 AM
#64
Jim if I only had an engine to buy it'd be a snap, but I'm going the standalone ECU route, add in cams and some other stuff and that's not cheap and I'm so house poor it's not funny. Guess I'll be living vicariously through you guys... haha... have fun at Maxus.
Harold you bet I'll be back... well technically I'm not going anywhere, just looks (at this point) like my car will be sitting in the garage for a long time...
I'll still check in from time to time to see how you 2 and some other people are doing...
BTW Harold I think you'll want to upgrade the intake setup right from the manifold out if you're talking about 8000 rpms.
Harold you bet I'll be back... well technically I'm not going anywhere, just looks (at this point) like my car will be sitting in the garage for a long time...
I'll still check in from time to time to see how you 2 and some other people are doing...
BTW Harold I think you'll want to upgrade the intake setup right from the manifold out if you're talking about 8000 rpms.
Last edited by DandyMax; 03-26-2009 at 07:30 AM.
03-26-2009, 08:34 AM
#66
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Would you guys look at this Cosworth intake manifold? I can't figure out if the design is any good for drag racing. Besides the fact that it's built for RWD cars - which can be changed with a welder...
http://www.cosworthusa.com/store/pc/...2&idproduct=89
http://www.cosworthusa.com/store/pc/...2&idproduct=89
03-26-2009, 08:48 AM
#68
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Actually, I've seen them for about $1,000 - about the Kinetix price. Not cheap, but nothing else has been.
03-26-2009, 10:28 AM
#70
Yeah, but would the manifold be worth the effort??? The power curve Cosworth shows on that page doesn't seem to make additional HP over the OEM intake - just extends the power curve upwards a bunch.
Actually, I've seen them for about $1,000 - about the Kinetix price. Not cheap, but nothing else has been.
Actually, I've seen them for about $1,000 - about the Kinetix price. Not cheap, but nothing else has been.
Also, wouldn't you have to use the Z33 lower intake manifold for this to work? It doesn't look like Cosworth supplied that part, just the upper.
03-26-2009, 10:58 AM
#72
Cosworth Head/Cam Components testing PDF link: crazy NA HP + RPM gains with all options..
http://www.cosworthusa.com/store/pc/...nt%20tests.pdf
http://www.cosworthusa.com/store/pc/...nt%20tests.pdf
03-26-2009, 11:22 AM
#73
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That area under the curve is where the most fun can be had. I'm interested in the findings here as well. It's a nice piece, but if it will yield the most power, I should look into it more vigorously.
Also, wouldn't you have to use the Z33 lower intake manifold for this to work? It doesn't look like Cosworth supplied that part, just the upper.
Also, wouldn't you have to use the Z33 lower intake manifold for this to work? It doesn't look like Cosworth supplied that part, just the upper.
http://www.cosworthusa.com/store/pc/...nt%20tests.pdf
And yes, the Cosworth IM appears to be just the upper part..
EDIT: you just beat me to it..
03-27-2009, 07:25 AM
#75
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That's how the big boys do business - and Cosworth is a Big Boy internationally.
Now I have a small setback on my build - the box of custom timing gears arrived last night at the post office - empty. Somewhere along the line the box came open and dumped all those custom gears and spacers out, never to be seen again. 
I've got to figure out what to do next - probably contact StephenMax about building another set...
Now I have a small setback on my build - the box of custom timing gears arrived last night at the post office - empty. Somewhere along the line the box came open and dumped all those custom gears and spacers out, never to be seen again.
I've got to figure out what to do next - probably contact StephenMax about building another set...
03-27-2009, 07:35 AM
#77
That's how the big boys do business - and Cosworth is a Big Boy internationally.
Now I have a small setback on my build - the box of custom timing gears arrived last night at the post office - empty. Somewhere along the line the box came open and dumped all those custom gears and spacers out, never to be seen again.
I've got to figure out what to do next - probably contact StephenMax about building another set...
Now I have a small setback on my build - the box of custom timing gears arrived last night at the post office - empty. Somewhere along the line the box came open and dumped all those custom gears and spacers out, never to be seen again.
I've got to figure out what to do next - probably contact StephenMax about building another set...
I'm looking thru old PMs from StephenMax, and I'll PM you with all the info you need to get new ones made. Like I said, StephenMax is a good guy, he was really helpful to me, so I think he'll be willing to help you out.
I'm so mad at those idiots at USPS right now...I just can't believe those precious gears are gone forever
I was really looking forward to someone putting them to good use!
03-27-2009, 08:13 AM
#79
But the lady at USPS made me re-package them, in a flat rate box, and apparently she ended up using SCOTCH TAPE
from now on I'll be insisting on my OWN packaging methods
03-27-2009, 08:44 AM
#80
That's how the big boys do business - and Cosworth is a Big Boy internationally.
Now I have a small setback on my build - the box of custom timing gears arrived last night at the post office - empty. Somewhere along the line the box came open and dumped all those custom gears and spacers out, never to be seen again.
I've got to figure out what to do next - probably contact StephenMax about building another set...
Now I have a small setback on my build - the box of custom timing gears arrived last night at the post office - empty. Somewhere along the line the box came open and dumped all those custom gears and spacers out, never to be seen again.
I've got to figure out what to do next - probably contact StephenMax about building another set...
First prob, using USPS. FedEx usually good.
Maybe the parts will turn up, but if they do they will prob be dinged up.