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This goes against convential thinking...but...

an incorrectly matched cam and turbo package can make or break a build.

this was a laggy set-up till slightly bigger camshafts were installed

around 300 more KW at 150kph...wow

post-23582-1166692783.jpg

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https://www.sau.com.au/forums/topic/148285-size-does-matter/
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what tha?

you said 300 more rwkws over what it had before the cams? Am i understanding this correctly?

If so...goddamn!

well yeah previously at 150km/h (5357rpm) it was making 150rwkw

now its making at 150km/h (5357rpm) its making 450rwkw

what tha?

you said 300 more rwkws over what it had before the cams? Am i understanding this correctly?

If so...goddamn!

Thats AWKW this a 4 wheel dyno...but yes r33 racer you are understanding correctly. (you can pick your jaw up off the floor now...lol)

Paul its a single retarder DD dyno...it ramps and reads more accurate in shoot8 with big hp cars. we have proven its accuracy to within 1kw at Autosalon (dynolog) on consectutive days.

that could also be PARTLY due to the RPM at which the run was begun. if you have the car idling in 4th on the dyno and put your foot down to log the run, it will reach full boost sooner than if you start at 3000rpm and put your foot down.

just a thought - the first run starts at 90km/h and the 2nd starts at 60km/h or so.

the cams certainly did make a large difference though, i'm not detracting from the gains which you have found. the difference is quite marked. it is one of those "all or nothing" power curves in which camshaft selection is critical as well.

top stuff.

hmmm, interested in these mystery cams is me ehehe.

Dave all i can say is one step larger in lift and one step larger in duration (inlet cam was two steps in duration) as they were different but now equal. Cams are off the shelf items of Japanese origin.

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