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R33 Skyline Gtst Turbo Cams Issues

Turbz RB-25

By Turbz RB-25,
in Engines & Forced Induction

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WARLORD Veteran

WARLORD

Posted
Posted (edited)
http://au.youtube.com/watch?v=OrkBIdGl1S0&...re=channel_page

Viedo clip of my car idling with cams if anyone is interested.

dude there's cams in that 33 its lumpy nice sound.

Edited by WARLORD
  • 3 months later...
Turbz RB-25 Experienced

Turbz RB-25

Posted
  • Author
Posted
You ever end up getting this sorted man? What was the issue?

haha nah I gave up, I just got a RB25/30 conversion instead with new cams.

Although, when we took the cams out, we noticed the lobe on the exhaust cam shaft hollowed out one of the lifters.....?

THen by closely inspecting the lobe on the shaft, we could see a machining fault, almost as though there was a chip off the lobe... I am not sure if this could have contributed to the pinging and low ignition timing?

ANyway, I replaced the 260 pro cam with a HKS 264 cam shaft. My car is going to be out within the next week, I'll keep you guys updated.

Cheers

dangerman4 Mentor

dangerman4

Posted
Posted

just for referance my 25 never went below 18 deg and it was only at 18 deg in a couple of cells.

the rest were 19 - 20 and up, and thats running 24 pound.

i also had a similar issue when poncams were installed, but that just needed a lot of new tuning and work with the ebc to iron out the map's issues

looking at your boost curve it is terrible, so no doupt thats where your missing power is hiding, combine that with the low timing and you shouldnt be

suprised to be missing 40 - 50 kws.

why did you get rid of vct just curious?

Turbz RB-25 Experienced

Turbz RB-25

Posted
  • Author
Posted
just for referance my 25 never went below 18 deg and it was only at 18 deg in a couple of cells.

the rest were 19 - 20 and up, and thats running 24 pound.

i also had a similar issue when poncams were installed, but that just needed a lot of new tuning and work with the ebc to iron out the map's issues

looking at your boost curve it is terrible, so no doupt thats where your missing power is hiding, combine that with the low timing and you shouldnt be

suprised to be missing 40 - 50 kws.

why did you get rid of vct just curious?

VCT wasn't working for some reason i.e. no difference when it was on or off.

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