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The results are in!!! Tomei Poncams installed and tuned...

JAGR33

By JAGR33,
in Engines & Forced Induction

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Yorik Community Regular

Yorik

Posted
Posted
Gotta machine rb26 head to fit anything 10.2 mm lift or bigger.

Tomei drop the base circle of the cam shaft so that overall diameter of the camshaft including the lobe is with in the head. The diameter goes from 32 to 30mm, the solid lifters that they supply are larger so that it contacts the smaller shaft. This way you can get more lift without machining the head. Of course I am welcome to being corrected if there is anyone here with TOMEI procams with high lift..

JAGR33 Grand Master

JAGR33

Posted
  • Author
Posted
Yorik - I know of a local car running exact same setup as me but with 10.8mm lift 260 Procams, not sure on power output, but these cams obviously need modification/machining of the head to accomodate...

Be interesting to see your results....

The car I'm talking about here is ph1's old car, sold to a guy in Melb, which had 346rwkws... But that was tuned around 3 years ago, Ben (Racepace) has learnt a lot more since then!!!!

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Great work Jack :)

Missing the DECA weekend you could say was worth it indeed.

Heard rumours of some good numbers ;)

PS: thanks for actually getting evidence of what i was saying about shootout ;)

makes some figures debateable when people swear by em

MSRB26 Enthusiast

MSRB26

Posted
Posted

Very nice power figure, i have seen a similar setup here is sydney with the T517's making 360 kw, simple setups are the best.

I am also keen on finding out about the cam timing as i already have a set of poncams installed but they are still set at 0. since the car is going back on the dyno soon it would be some handy info ;)

INASNT Grand Master

INASNT

Posted
Posted
Great work Jack  :)

Missing the DECA weekend you could say was worth it indeed.

Heard rumours of some good numbers ;)

PS: thanks for actually getting evidence of what i was saying about shootout  :rant:

makes some figures debateable when people swear by em

Wasent you drive upto WA last year meant to put all the WA dyno reading to rest??? bleh.gif

Nice work jack.

What speed were you hitting on the front straight at last sandown day???

redline2003 Community Regular

redline2003

Posted
Posted

So these brought the car on boost quicker did they(quicker spoo; time, less lag)?? Or did they just bring on power quicker while the car was on boost? Looking for cams to allow for boost to start earlier in the rev range, dont like lag much....

JAGR33 Grand Master

JAGR33

Posted
  • Author
Posted
So these brought the car on boost quicker did they(quicker spoo; time, less lag)?? Or did they just bring on power quicker while the car was on boost? Looking for cams to allow for boost to start earlier in the rev range, dont like lag much....

I haven't really checked exactly when I get full boost now, but it used to be around 5000rpm. But I did see full boost at about 4800rpm in the quick drive after the dyno tune, but it may be earlier, its a bit hard to look at the boost gauge, rev tacho and road at the same time when giving it stick in 2nd gear on the streets... Might have to check it out next time on the track where I can try in the higher gears....

Also Ben (Racepace) said they came on slightly earlier according to the old graph, which I'm still trying to find...

JAGR33 Grand Master

JAGR33

Posted
  • Author
Posted
True, your car would have broken down after a few 100 km's. :D

Jack

Next time out at Sandown you should be in the low 1.20's coz u got the power, brakes, suspension and cheater tyres.

The car's definetly got the potential, its just the driver needs more experience!!!

Interloper - that was the point in showing the different modes, so in future when somebody puts up a dyno graph you can have a more accurate idea of what power it's really pushing...

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