Jun 272's Vs. HKS 280's 55-60whp!
Apr 23, 2006, 10:27 AM
#76
Evolving Member
iTrader: (6)
Join Date: Jan 2004
Location: IL
Posts: 400
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 6-speed
Hey AMS:
Your power gains with the JUN cams compared to HKS 280s was on a large turbo Evo.
Do you have any dyno numbers with the JUN 272 cams on a stock turbo Evo versus the HKS 280s?
or
Do these cams really need a larger turbo to see effective gains?
Thank you very much.
Your power gains with the JUN cams compared to HKS 280s was on a large turbo Evo.
Do you have any dyno numbers with the JUN 272 cams on a stock turbo Evo versus the HKS 280s?
or
Do these cams really need a larger turbo to see effective gains?
Thank you very much.
i had them on a stock turbo, the BR500 and the AMS GT35R, so i'll go ahead and throw in my knowledge.......
the stock turbo cannot push the volume of air that the Jun cams demand. i saw a drastic drop in high end power w/ that setup. now, on the larger turbo setups, hold the "F" on, because that's where they shine. if you're sticking w/ a smaller turbo, stick w/ the HKS cams or cams along those lines. just my opinion.
May 3, 2006, 04:29 PM
#77
Evolved Member
iTrader: (5)
Join Date: Feb 2005
Location: Phoenix
Posts: 1,545
Likes: 0
Received 0 Likes
on
0 Posts
I tried to place an order for the jun 264 from you guys. The answer was "we cant get them"
I called around and the wait time is almost 3 months for the 264. It is my understanding that Jun is out of cam stock material for the moment. Is this the case or can you (AMS) supply the 264 Jun cams in a timely manner?
Thanks
I called around and the wait time is almost 3 months for the 264. It is my understanding that Jun is out of cam stock material for the moment. Is this the case or can you (AMS) supply the 264 Jun cams in a timely manner?
Thanks
May 5, 2006, 04:28 PM
#84
Evolved Member
iTrader: (5)
Join Date: Feb 2005
Location: Phoenix
Posts: 1,545
Likes: 0
Received 0 Likes
on
0 Posts
Eric..once again I just wanted to say thanks for getting me those Jun 264 cams. I have been trying like mad for almost 3 weeks to locate them and get them coming.
May 11, 2006, 10:56 PM
#85
Ted-
how would you rate or compare the Jun cams vs cosworth M2
since this is cosworth spec sheet
how would you rate or compare the Jun cams vs cosworth M2
Here are some specs for comparison:
HKS 280
Duration: 222 deg @ 1mm lift Int / Exh
Lift: 10.8mm Int / 10.2mm Exh
Lobe Centerlines: 110 Int / 110 Exh
Revolver 262/264
Duration: 222 @ 1mm Int / 223 @ 1mm Exh
Lift: 11.4mm Int / 11.5mm Exh
LobeCenterlines: 109 Int / 111 Exh
JUN 272:
Duration: 235 deg @ 1mm Int / Exh
Lift: 10.8mm Int / Exh
Lobe Centerlines: 110 Int / 115 Exh
HKS 280
Duration: 222 deg @ 1mm lift Int / Exh
Lift: 10.8mm Int / 10.2mm Exh
Lobe Centerlines: 110 Int / 110 Exh
Revolver 262/264
Duration: 222 @ 1mm Int / 223 @ 1mm Exh
Lift: 11.4mm Int / 11.5mm Exh
LobeCenterlines: 109 Int / 111 Exh
JUN 272:
Duration: 235 deg @ 1mm Int / Exh
Lift: 10.8mm Int / Exh
Lobe Centerlines: 110 Int / 115 Exh
May 12, 2006, 11:17 PM
#87
Evolved Member
iTrader: (2)
Join Date: Jul 2004
Location: in front of your car
Posts: 2,356
Likes: 0
Received 0 Likes
on
0 Posts
if anyone wants some "man" cams, get the Piper 290 drag cams (part# MITS1741-solid lifters only. valve spring kit VSSMITS also required). here are the specs:
Duration@1mm-242deg (int), 242deg (exh)
Duration-290deg int, 290deg exh
Valve Lift-12.0mm (.472"), 12.0mm (.472")
Timing- int 39-71, exh 71-39
Full Lift- 106deg (int ATDC), 106deg (exh BTDC)
Valve Clearance- .006"/15mm, .006"/15mm
can only be purchase thru dentist mapped. i may run these with a Cosworth head. if not, i'm looking at Tomei 280's with 12.0 lift...
Duration@1mm-242deg (int), 242deg (exh)
Duration-290deg int, 290deg exh
Valve Lift-12.0mm (.472"), 12.0mm (.472")
Timing- int 39-71, exh 71-39
Full Lift- 106deg (int ATDC), 106deg (exh BTDC)
Valve Clearance- .006"/15mm, .006"/15mm
can only be purchase thru dentist mapped. i may run these with a Cosworth head. if not, i'm looking at Tomei 280's with 12.0 lift...
May 14, 2006, 08:39 AM
#88
I agree that without standard duration numbers reported by Cosworth, it's difficult to tell. However, looking at what is reported in the way of duration, it appears to me that the Cosworth cam set is a bit milder than the JUN 272.
As far as those Piper Race cams, with a whopping 242 deg of duration at 1mm and ultra-tight 106 deg lobe centerlines, you'll have a tough time just getting it to idle at 1200rpm.
As far as those Piper Race cams, with a whopping 242 deg of duration at 1mm and ultra-tight 106 deg lobe centerlines, you'll have a tough time just getting it to idle at 1200rpm.
May 14, 2006, 01:26 PM
#89
Originally Posted by Ted B
I agree that without standard duration numbers reported by Cosworth, it's difficult to tell. However, looking at what is reported in the way of duration, it appears to me that the Cosworth cam set is a bit milder than the JUN 272.
As far as those Piper Race cams, with a whopping 242 deg of duration at 1mm and ultra-tight 106 deg lobe centerlines, you'll have a tough time just getting it to idle at 1200rpm.
As far as those Piper Race cams, with a whopping 242 deg of duration at 1mm and ultra-tight 106 deg lobe centerlines, you'll have a tough time just getting it to idle at 1200rpm.
May 14, 2006, 07:40 PM
#90
Again, there isn't enough information to be certain, but the effective difference in peak lift is very small considering the headflow data that I have. The JUN has 235 deg duration at 1mm (0.04"), which looks to me like it would be slightly longer than the Cosworth M2.
If installed straight up, the JUNs will be a little more top end oriented due to the centerline differences.
If installed straight up, the JUNs will be a little more top end oriented due to the centerline differences.