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JUN 264 cams

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Old Jun 28, 2014 | 06:08 AM
  #16  
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From: Mesoamerica/ SF Bay Area
Originally Posted by mines5
Is there any difference in USDM and JDM evo 8 cams and cylinder heads?
UK, and I suppose JDM, VIII MR factory cams are slightly more radical than standard VIII cams.
Old Jun 28, 2014 | 08:01 AM
  #17  
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From: Tampa
Originally Posted by mines5
So what u mean is that HKS 272's ramp rate is lesser than JUN 264s even though its duration is larger..
yes exactly.
Old Jun 29, 2014 | 09:51 AM
  #18  
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From: Streets of willow
Update*

Installed the JUN 264 cams after cleaning and bleeding the HLAs which were hard as a rock. The cams are currently set as 0 intake / 0 exhaust .

The idle was loopy but the response of the car above 2000 rpm changed radically, the response was amazing. I could literally feel the air rushing through.. Spool , mid range and top end was improved significantly over the stock cams.

Using stock springs and retainers car is at 1 bar boost. Changed some values in the fuel and timing map but the idle is jittery even after pushing the idle upto 1200 rpm. As soon as i turn on the A/C the idle becomes much more stable but without a/c its loopy.

I tried adding fuel at the idle rpm and load cells but the ecu still hunts for 14.7 and hovers around 14.7 to 16. There is a table named OPEN LOOP TPS vs RPM which helps in idle stability but sadly i cant any such table in my rom. the rom is 93660005.

Need your help.
Thanks

Last edited by mines5; Jun 29, 2014 at 10:05 AM.
Old Jun 29, 2014 | 10:12 AM
  #19  
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From: Streets of willow
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Attached Thumbnails JUN 264 cams-img0203a.jpg   JUN 264 cams-img0201a.jpg  
Old Jul 1, 2015 | 10:47 AM
  #20  
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From: Tampa
did you get your car to idle good? what kind of vacuum did you have at idle? and at what rpm? as I remember them they looped pretty good even on a 2.3 engine
Old Jul 6, 2015 | 05:49 AM
  #21  
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From: Streets of willow
Originally Posted by 94AWDcoupe
did you get your car to idle good? what kind of vacuum did you have at idle? and at what rpm? as I remember them they looped pretty good even on a 2.3 engine
Basically, i made a mistake, i didnt install adjustable cam gears with them, so i couldnt do much to adjust the overlap. If you drop them straight in, the idle is very loopy [ 280 like ] . I wasnt running a tephra rom, so didnt had the luxury of adjusting alot of parameters.

i dont exactly remember the vacuum i had but it wasnt stable at all. I tried to raise the idle to 1000, 1100 but the difference wasnt so obvious.
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