Dyno of JWT Cams
10-22-2002, 08:32 PM
#12
Originally posted by MAX2000JP
Anyone have a comparison of Lift and Duration....Stock vs JWT??
Anyone have a comparison of Lift and Duration....Stock vs JWT??
10-22-2002, 08:34 PM
#14
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Originally posted by DA-MAX
I think thats the prob...JWT and the "mystery man" who actually has a set aren't talking! and for good reason too, if JWT dropped the specs/info you could probably have Crower or Motorsport, etc. whip you up a set for less!
I think thats the prob...JWT and the "mystery man" who actually has a set aren't talking! and for good reason too, if JWT dropped the specs/info you could probably have Crower or Motorsport, etc. whip you up a set for less!
10-22-2002, 08:36 PM
#15
Originally posted by MAX2000JP
They better release those stats or you wont know what your getting. Without telling people Duration and Lift, how do they know it isnt a stock grind.
They better release those stats or you wont know what your getting. Without telling people Duration and Lift, how do they know it isnt a stock grind.
10-22-2002, 08:39 PM
#16
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Originally posted by DA-MAX
if its a mild n/a cam, my guess is 10-12hp peak...15+ seems high for a mild cam, but that all depends on JWT. should work well with a VI since the motor will be able to rev higher.
if its a mild n/a cam, my guess is 10-12hp peak...15+ seems high for a mild cam, but that all depends on JWT. should work well with a VI since the motor will be able to rev higher.
10-22-2002, 08:47 PM
#17
Originally posted by La Jolla Max
the gains were more than triple your estimate
the gains were more than triple your estimate
10-22-2002, 08:54 PM
#19
Originally posted by La Jolla Max
Dennis prototyped some cams (not JWT) on his 99 around a year ago. While it couldn't idle very well, the gains were more than triple your estimate
Dennis prototyped some cams (not JWT) on his 99 around a year ago. While it couldn't idle very well, the gains were more than triple your estimate
10-22-2002, 09:11 PM
#20
Originally posted by Chris91SE
you play the trumpet don't you?
anyway thread in the F/S forum discusses this in "some" detail
you play the trumpet don't you?
anyway thread in the F/S forum discusses this in "some" detail
No..tuba.. I pitch.. I do not catch
and thanks for the info about the FS section
10-22-2002, 09:42 PM
#23
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I've seen the JWT cams gain around 10-15whp in a VG30 and 8-30whp in a SR20 depending on grind. Looking at the specs of the OEM VQ cam it is so mild. A grind simular to the ISKY 262 for the VGs would probably see a 10-18whp gain, without much if any loss of low rpm torque. The question is who has some cores that are willing to be "donated" for science err testing 
.
.
10-22-2002, 10:53 PM
#26
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Originally posted by DA-MAX
and what other mods did he have?? IMO, the most beneficial numbers to go by are base vs. the single mod and nothing else
and what other mods did he have?? IMO, the most beneficial numbers to go by are base vs. the single mod and nothing else
Yes, but how many people are going to have the money to install something as expensive as cams, and not touch anything else engine related?
I think testing with mods is even more beneficial.
I agree with BriGuyMax...certainly nothing as radical as, 40fwhp and 22lb-ft should be expected, but I know how mild the stock cams are..the VQ is in fact a severely detuned racing engine. What better way to detune an engine than to choke it with mild cams? I'm expecting at least a 20fwhp gain as well.
10-23-2002, 12:31 AM
#27
Originally posted by Nismo87SE
I've seen the JWT cams gain around 10-15whp in a VG30 and 8-30whp in a SR20 depending on grind. Looking at the specs of the OEM VQ cam it is so mild. A grind simular to the ISKY 262 for the VGs would probably see a 10-18whp gain, without much if any loss of low rpm torque. The question is who has some cores that are willing to be "donated" for science err testing.
I've seen the JWT cams gain around 10-15whp in a VG30 and 8-30whp in a SR20 depending on grind. Looking at the specs of the OEM VQ cam it is so mild. A grind simular to the ISKY 262 for the VGs would probably see a 10-18whp gain, without much if any loss of low rpm torque. The question is who has some cores that are willing to be "donated" for science err testing
.
10-23-2002, 10:22 AM
#31
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JWT uses new nissan billets when they get the cams reground. However it is possible to regrind a cam that has been used. For example if anyone has a blown VQ all you have to do is send the cams to whoever you want to do the regrinding. I had used ISKY 262's in my max and the difference was very noticeable. Otherwise new/billet cams from nissan cost $200 each and ISKY charges $150-300 for regrinds. With a core motor you can get cams for less than $500. I'm also sure the install is labor intensive since the IM has to be removed. I just looked at the FSM and man this install is a b****. Hmm also it appears the SR20 method of zip tying the chain to the sprockets might work too.
EDIT: The FSM lists the duration as 232* and the cam lobes have a hieght of 43.9-44.1mm. Also the VQ30 intake/exhaust cams have the same valve timing as the 94+ SR20 cams. It is a fact that swapping in a 91-93 intake cam usually gains 5-8whp on 95+ se-rs.
EDIT: The FSM lists the duration as 232* and the cam lobes have a hieght of 43.9-44.1mm. Also the VQ30 intake/exhaust cams have the same valve timing as the 94+ SR20 cams. It is a fact that swapping in a 91-93 intake cam usually gains 5-8whp on 95+ se-rs.
Originally posted by Nealoc187
What do you mean as far as cores. If I understood correctly these are not regrinds, but rather brand new billet pieces. Both Brian and I plan on having these by spring. I hope my credit card is ready for a shock!
What do you mean as far as cores. If I understood correctly these are not regrinds, but rather brand new billet pieces. Both Brian and I plan on having these by spring. I hope my credit card is ready for a shock!
10-23-2002, 12:00 PM
#33
yes...N/A cams should not go into a FI car, but it is possible for FI spec cams to go in an N/A car(ie- the Nismo Euros for the VG and VGT).
Originally posted by SuDZ
Cant wait to see the gains this could be very cool for us NA guys. Nowwould the cams have to be different for a SC or Turbo application? What about Nitrous... where does that fit in as far as cams go?
SuDZ
Cant wait to see the gains this could be very cool for us NA guys. Nowwould the cams have to be different for a SC or Turbo application? What about Nitrous... where does that fit in as far as cams go?
SuDZ
10-23-2002, 12:10 PM
#34
Originally posted by Nismo87SE
EDIT: The FSM lists the duration as 232* and the cam lobes have a hieght of 43.9-44.1mm. Also the VQ30 intake/exhaust cams have the same valve timing as the 94+ SR20 cams. It is a fact that swapping in a 91-93 intake cam usually gains 5-8whp on 95+ se-rs.
EDIT: The FSM lists the duration as 232* and the cam lobes have a hieght of 43.9-44.1mm. Also the VQ30 intake/exhaust cams have the same valve timing as the 94+ SR20 cams. It is a fact that swapping in a 91-93 intake cam usually gains 5-8whp on 95+ se-rs.
10-23-2002, 12:18 PM
#35
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Yes. The 3.0L VQ cams have 232 deg duration on intake and exhaust. Very very mild. 256 deg (JWT cams) is even conservative for an aftermarket cam. Should give very little low rpm torque loss, if any.
Originally posted by NmexMAX
Are these the lift/durations of VQ30 cams?
Are these the lift/durations of VQ30 cams?
10-23-2002, 12:36 PM
#36
Can you explain why?
Originally posted by DA-MAX
yes...N/A cams should not go into a FI car, but it is possible for FI spec cams to go in an N/A car(ie- the Nismo Euros for the VG and VGT).
yes...N/A cams should not go into a FI car, but it is possible for FI spec cams to go in an N/A car(ie- the Nismo Euros for the VG and VGT).
10-23-2002, 12:57 PM
#37
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Join Date: Sep 2000
Posts: 1,441
Originally posted by DA-MAX
yes...N/A cams should not go into a FI car, but it is possible for FI spec cams to go in an N/A car(ie- the Nismo Euros for the VG and VGT).
yes...N/A cams should not go into a FI car, but it is possible for FI spec cams to go in an N/A car(ie- the Nismo Euros for the VG and VGT).
keep in mind the first to get these cams was I30krab, and his car is supercharged..He's the one who pushed to get them out the door.
10-23-2002, 01:00 PM
#38
I was thinking the same thing 256 is pretty mild. Better than our stock 232, but still not very radical. Personally I'm willing to sacrifice low end and idle if I'm able to extract some more top end (if the gain is significant). I know alot of guys running 262s and 268s on cars like VR6s without driveability problems.
10-23-2002, 02:23 PM
#39
whats yor point?? I said yes, FI to N/A will work, NOT vice versa!! anyways my buddy has the Nismo Euro VG Cams(for the VGT) in his 92 Max GXE.
Originally posted by La Jolla Max
Errr...
keep in mind the first to get these cams was I30krab, and his car is supercharged..He's the one who pushed to get them out the door.
Errr...
keep in mind the first to get these cams was I30krab, and his car is supercharged..He's the one who pushed to get them out the door.