67 replies to this topic

[Muncher]

What's that vocky?

[alanoo]

Something impossible to find

[vocky]

well I don't think there are any available in the uk, so either I buy a new gearbox or keep looking Alanoo - it has the close ratio gearing too top speed (on paper) comes down from the 'vxr' 198 mph to 161, the wide ratio box would be 186 mph

[alanoo]

Hum, very interesting because 161 is very close to the real max speed you should have at your power level

[The Batman]

]

Courtenay stage 5 with ITG, 2.4 inlet, 4-1 piper, Miltek exhaust and DIY ported throttle body.

you spent nearly £4k on getting 185ish bhp?

you dont need double valve springs unless you go over 7k revs... plus what are you going to risk braking going over 7krevs unless you get 250bhp then i suggest changing the rods but highly unlikely you will get that amount of power!

[TheHood]

]

Courtenay stage 5 with ITG, 2.4 inlet, 4-1 piper, Miltek exhaust and DIY ported throttle body.

you spent nearly £4k on getting 185ish bhp?

you dont need double valve springs unless you go over 7k revs... plus what are you going to risk braking going over 7krevs unless you get 250bhp then i suggest changing the rods but highly unlikely you will get that amount of power!

It's not just power that kills the bottom end - revs can just as easily do it.

With the amount of lift the cams I have see how long the standard springs would last at 7k....

And as a general observation who knows for sure what regime of testing the GM build book was done under? Could be a full-on dyno 24h durability test, or a couple of full bore rags up a drag strip - no one knows.....

As for SC I'd rather my car didn't sound like a demented washing machine tar-very-mooch! "neeeeeeeeeh,neeeeeeeeeh,neeeeeeeeh"

It cost less than £3k as I had stuff like the exhaust. I tried the (cheap) DIY route and was lucky to get away without ruining my engine.



Sorry i think we've gone a bit off topic here.

Edited by TheHood, 06 May 2009 - 03:56 PM.

[The Batman]

It's not just power that kills the bottom end - revs can just as easily do it.

With the amount of lift the cams I have see how long the standard springs would last at 7k....

And as a general observation who knows for sure what regime of testing the GM build book was done under? Could be a full-on dyno 24h durability test, or a couple of full bore rags up a drag strip - no one knows.....

As for SC I'd rather my car didn't sound like a demented washing machine tar-very-mooch! "neeeeeeeeeh,neeeeeeeeeh,neeeeeeeeh"

It cost less than £3k as I had stuff like the exhaust. I tried the (cheap) DIY route and was lucky to get away without ruining my engine.

buy a harrop that doesnt make the wining noise

£3k for 35bhp still not selling it too me each to there own as they say and lets not get into a hissy fit now

Edited by joe_589, 06 May 2009 - 03:59 PM.

[TheHood]

It's not just power that kills the bottom end - revs can just as easily do it.

With the amount of lift the cams I have see how long the standard springs would last at 7k....

And as a general observation who knows for sure what regime of testing the GM build book was done under? Could be a full-on dyno 24h durability test, or a couple of full bore rags up a drag strip - no one knows.....

As for SC I'd rather my car didn't sound like a demented washing machine tar-very-mooch! "neeeeeeeeeh,neeeeeeeeeh,neeeeeeeeh"

It cost less than £3k as I had stuff like the exhaust. I tried the (cheap) DIY route and was lucky to get away without ruining my engine.

buy a harrop that doesnt make the wining noise

£3k for 35bhp still not selling it too me each to there own as they say and lets not get into a hissy fit now

Of course you're right £3k is shed load of cash, but I guess I wasn't thinking straight at the time.. Mind you, I don't think any of us that hang around here think that straight - tuning rarely makes sense.

No hissy fit here - it's all good fun