Double Down / Relentless Autosports JWT 850 TT'ed Z wins the Time Attack Finals
#21
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Originally Posted by eagletanggreen
Great work once agian, bet those CAMs helped out.
#22
Originally Posted by WA2GOOD
The cams did not quite help as much as I expected but I have not ruled out the potential of them yet. We just need more tuning time with them.
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Originally Posted by Money0veru
What kind of power did you put down with those cams?
The cams did benefit us on the fact that the car gets into boost quite a bit quicker than with the S2 cams.
#24
Originally Posted by WA2GOOD
684 whp @ 20psi. Once a couple more issues are adressed on the car that the cams created, I am sure we will be in the mid 700's to 800's.
The cams did benefit us on the fact that the car gets into boost quite a bit quicker than with the S2 cams.
The cams did benefit us on the fact that the car gets into boost quite a bit quicker than with the S2 cams.
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Originally Posted by Money0veru
How fast do they spool up now? Do you have a dyno plot to share with us.I was thinking of going with the JWT big cams,but want to see some results.
If you plan on using these cams on a street driven car, I would strongly recomend not to use these huge cams, as streetability does go out the window and there is nothing in the way of a consistant idle and a lot of flutter below 26 k rpm. Not realy a street cam.
#26
Originally Posted by WA2GOOD
There are too many things to consider and take in acount. Each car is different and has a different build, I would say that on our time attack car the lag was reduced about 500-600 rpm with these cams compared to the S2's. This is with JWT 850 TT kit at 20psi.
Originally Posted by WA2GOOD
If you plan on using these cams on a street driven car, I would strongly recomend not to use these huge cams, as streetability does go out the window and there is nothing in the way of a consistant idle and a lot of flutter below 26 k rpm. Not realy a street cam.
Either way, some graphs to see would be interesting.
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Originally Posted by Money0veru
Cool, you got some side by side dynos so we can compare?
I though you just said above that they "reduced turbo lag by 500-600rpms" But now your saying they arent streetable? Im a bit confused now. If they spool up faster wouldnt that be good for street use? But generally larger cams slow the spool up no?
Either way, some graphs to see would be interesting.
I though you just said above that they "reduced turbo lag by 500-600rpms" But now your saying they arent streetable? Im a bit confused now. If they spool up faster wouldnt that be good for street use? But generally larger cams slow the spool up no?
Either way, some graphs to see would be interesting.
The cams are not streetable, because you will have NO idle and the car will not want to run at all below 2k rpm, and not very well untill it reaches close to 2,800 ish rpm. Not ideal on a street car, or most cars.
#28
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Originally Posted by WA2GOOD
684 whp @ 20psi. Once a couple more issues are adressed on the car that the cams created, I am sure we will be in the mid 700's to 800's.
The cams did benefit us on the fact that the car gets into boost quite a bit quicker than with the S2 cams.
The cams did benefit us on the fact that the car gets into boost quite a bit quicker than with the S2 cams.
#29
Originally Posted by WA2GOOD
No, I do not have any comparable dyno sheets, we had no reason to save them, not a good comparison, yet.
The cams are not streetable, because you will have NO idle and the car will not want to run at all below 2k rpm, and not very well untill it reaches close to 2,800 ish rpm. Not ideal on a street car, or most cars.
The cams are not streetable, because you will have NO idle and the car will not want to run at all below 2k rpm, and not very well untill it reaches close to 2,800 ish rpm. Not ideal on a street car, or most cars.
#30
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Originally Posted by doug
are these the same cams you made 800 on SinCity's car?
#31
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Originally Posted by Money0veru
Cool, you got some side by side dynos so we can compare?
I though you just said above that they "reduced turbo lag by 500-600rpms" But now your saying they arent streetable? Im a bit confused now. If they spool up faster wouldnt that be good for street use? But generally larger cams slow the spool up no?
Either way, some graphs to see would be interesting.
I though you just said above that they "reduced turbo lag by 500-600rpms" But now your saying they arent streetable? Im a bit confused now. If they spool up faster wouldnt that be good for street use? But generally larger cams slow the spool up no?
Either way, some graphs to see would be interesting.
i personally like the sound of a lopey idle though, lol. if it doesn't go fast at low rpm's it is becasue i am driving like a grandma and don't need the power, but a stab of the gas and rpm's go quick in the right gear to hit your power band.
i could go off on a duration/lift vs. rpm and driveabilty theory i have, but will end it unless someone asks for more, ha!
hey scott, you guys still using my exhaust? had it independantly tested and it seems to be the good stuff, lol.
#32
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Originally Posted by overZealous1
you guys still using my exhaust? had it independantly tested and it seems to be the good stuff, lol.
This isn't exactly the look we want to keep all year long with the exhaust tips
Last edited by SinCity350Z; 01-06-2008 at 06:29 PM.
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Originally Posted by overZealous1
hey scott, you guys still using my exhaust? had it independantly tested and it seems to be the good stuff, lol.
#36
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Originally Posted by WA2GOOD
^^^ Probably one of the best exhausts I have seen. I just with the joints were solid, but the resenator and muffler choice couldn't be any better.
for you guys i would recommend welding as many joints together as possible. the band clamps work great, but not designed to be reused more than a couple times and they need to go back on to the same exact joint. if not they will allow it to slip, which a trip over a rumble strip would be enough to do it.
hey mike. don't have any extra tips. but dang, you atleast need to put a straight section on there, those angled ones look......ummm.........
gunna finally be doing a rear diffuser for my car. it will involve cutting out the center rear of the bumper (which looks like ya got that part done, lol ) and go all the way to the rear diff. it will either be sheet alum. or i might do cf. looking into some honeycomb cf laminations, but that would be ALOT more work. will keep ya posted on progress.
good luck, you guys are doing awesome!
#38
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Originally Posted by SinCity350Z
^^^Thanks Scott! I guess I will need to get some new tips fabbed up .
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