So the 2.5s in hawks - avoid at all cost or go in eyes open?
31 August 2013, 02:17 PM
#31
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Agree. Common misconception that 2.5s are Lazy. They rip through the gears with a proper turbo and supporting mods. A mate asked me if I had a short ratio box after I took him WOT though gears 1-4 and this is on a long legged Hawk UK box!! God knows what yours is like!! 
I think some people refer to them as Lazy as they don't rev to 8k rpm like the JDMs unless you have the heads seen to etc....
As always, depends how much you want to spend!
6.5k peak on a well tuned 2.5 more than enough for most!
I've told this story before, but after giving a mate with a 996 911 turbo a ride (mine is an SC46 turbo based conversion), he commented that my car was as fast as his (if not marginally faster) at one quarter the cost!
I'd be looking at the CDB from Alyn too. Seems like a comprehensive engineering solution to the weaker 2.5 block.
I think some people refer to them as Lazy as they don't rev to 8k rpm like the JDMs unless you have the heads seen to etc....
As always, depends how much you want to spend!
6.5k peak on a well tuned 2.5 more than enough for most!
I've told this story before, but after giving a mate with a 996 911 turbo a ride (mine is an SC46 turbo based conversion), he commented that my car was as fast as his (if not marginally faster) at one quarter the cost!I'd be looking at the CDB from Alyn too. Seems like a comprehensive engineering solution to the weaker 2.5 block.
If you read Bob Rawles project thread it makes for a very interesting read for a 2.5 build. I have been out for a ride in his car and i can honestly say it's far from lazy Very well mannered at slow traffic speeds and bloody ballistic when you turn up the taps.
31 August 2013, 02:19 PM
#32
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I am currently looking into a Forged 2.1 with a SC46 but now reading this I don't know if I should go 2.5. Mines more of a road car with one track day a year! I never go to the full RPM even now.
31 August 2013, 11:45 PM
#40
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I have it on good authority that the 2010 onwards 2.5 blocks have much thicker liners than the previous blocks. The trade off being slightly less cooling area in the block. Cryogenic treatment of the block, CDB inserts and 14mm head studs should give a good base to build on for big power If you read Bob Rawles project thread it makes for a very interesting read for a 2.5 build. I have been out for a ride in his car and i can honestly say it's far from lazy Very well mannered at slow traffic speeds and bloody ballistic when you turn up the taps.
If you read Bob Rawles project thread it makes for a very interesting read for a 2.5 build. I have been out for a ride in his car and i can honestly say it's far from lazy Very well mannered at slow traffic speeds and bloody ballistic when you turn up the taps."How much?!?!?"
31 August 2013, 11:57 PM
#41
http://www.frozensolid.co.uk/motorsport-c-21.html
And please read this too,worth the reading
http://www.frozensolid.co.uk/faq.php
http://www.nitrofreeze.com/services/...-sports-fleet/
Jura
01 September 2013, 12:02 AM
#42
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there been several times i've looked under the bonnet of his car and struggled to refrain asking the vulgar question
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