JUN 264 cams
Thread Starter
Joined: Dec 2008
Posts: 622
Likes: 118
From: Winnipeg, Manitoba, Canada
JUN 264 cams
This may seem like a blast from the past, but stay with me.
I can get a new set of JUN 264 or 272 cams shipped cheaper to me than a set of GSCs. JUN's machining is second-to-none, and they were the hottest cams in the 2000-2010 period.
I'm strongly considering the JUN 264 on my 2.0L EFR7670 build. Nobody has ever posted exact duration specs on them, but the 264's duration seems to be between the Kelford 272 and GSC S2, it's just the lift that's lower (10.5/10.5 vs 11.0/11.0 and 11.03/11.03, respectively). This cam should still make good power and get going sooner than the GSC S2 and Kelford 272.
Can anyone tell me about their experience with the JUN 264?
I can get a new set of JUN 264 or 272 cams shipped cheaper to me than a set of GSCs. JUN's machining is second-to-none, and they were the hottest cams in the 2000-2010 period.
I'm strongly considering the JUN 264 on my 2.0L EFR7670 build. Nobody has ever posted exact duration specs on them, but the 264's duration seems to be between the Kelford 272 and GSC S2, it's just the lift that's lower (10.5/10.5 vs 11.0/11.0 and 11.03/11.03, respectively). This cam should still make good power and get going sooner than the GSC S2 and Kelford 272.
Can anyone tell me about their experience with the JUN 264?
Are you running pump gas or E85 with 7670? Whats the power goal?
I've never noticed a spool up difference between say an S1 and S2, or kelford 272/GSC S2/Buschur 272, etc. Only time I really notice spool up changes are stock to any cam, or going from a 272 or smaller up to a 280 sized cam. But, if you have mivec, it complete cancels that out and usually there is no difference.
Given that the Jun 272 is the most aggressive 272, its good bet the 264 will get you more than a GSC s1 or kelford 264.
I've never noticed a spool up difference between say an S1 and S2, or kelford 272/GSC S2/Buschur 272, etc. Only time I really notice spool up changes are stock to any cam, or going from a 272 or smaller up to a 280 sized cam. But, if you have mivec, it complete cancels that out and usually there is no difference.
Given that the Jun 272 is the most aggressive 272, its good bet the 264 will get you more than a GSC s1 or kelford 264.
Thread Starter
Joined: Dec 2008
Posts: 622
Likes: 118
From: Winnipeg, Manitoba, Canada
Evo 1 engine (basically 7-bolt DSM).
2.0L longrod engine with around 8.6:1 compression, Curt Brown head & intake porting. No MIVEC.
EFR 7670 (0.92 IWG) on cast divided T4 manifold, Evo 123 intake manifold & throttle body.
I'll be running flex fuel capability on a Haltech PS1000, so E85 is certainly going to be available to the car. It will probably run on a mix of 94 octane (pump) and E85 from a drum.
Goal - 500+ WHP on the big end would be nice, but I want 300 ft-lbs of torque as early as possible, preferably before 4,000 RPM. I don't want to make over 450 ft-lbs of torque with the car, as the Evo 123 transmissions will eventually strip 3rd and 4th gears at that level. It's an autocrosser and street car, so the 7670 is already a big turbo for what I'm doing, but they respond very quick. The JUN 272 would move the powerband too far right for what I'm doing, I think. The JUN 264 is probably closer to the GSC S2 and Kelford 272 than the S1 and Kelford 264.
2.0L longrod engine with around 8.6:1 compression, Curt Brown head & intake porting. No MIVEC.
EFR 7670 (0.92 IWG) on cast divided T4 manifold, Evo 123 intake manifold & throttle body.
I'll be running flex fuel capability on a Haltech PS1000, so E85 is certainly going to be available to the car. It will probably run on a mix of 94 octane (pump) and E85 from a drum.
Goal - 500+ WHP on the big end would be nice, but I want 300 ft-lbs of torque as early as possible, preferably before 4,000 RPM. I don't want to make over 450 ft-lbs of torque with the car, as the Evo 123 transmissions will eventually strip 3rd and 4th gears at that level. It's an autocrosser and street car, so the 7670 is already a big turbo for what I'm doing, but they respond very quick. The JUN 272 would move the powerband too far right for what I'm doing, I think. The JUN 264 is probably closer to the GSC S2 and Kelford 272 than the S1 and Kelford 264.
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