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CVH/ZVH rev limits

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Old 26-11-2006, 12:07 PM
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sas
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Default CVH/ZVH rev limits

I am wondering where you all have set your rev limits?

Also who has pulled a rocker stud out of the head and what revs?

Regards,
Simon.
Old 26-11-2006, 12:14 PM
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Badman38
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Default Re: CVH/ZVH rev limits

Originally Posted by sas
I am wondering where you all have set your rev limits?

Also who has pulled a rocker stud out of the head and what revs?

Regards,
Simon.

i think mine is 6800 pulled a rocker stud at 6600rpm but i think this was due to the newman solid lifter locknut coming loose giving me no clearance.
Old 26-11-2006, 12:17 PM
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but saying that my engine peak power at 6000rpm so in any case i am just over reving it with no gain, i need to drop my final drive to either a 3.5 or 3.3 my current 3.82 does'nt suit my engine.
Old 26-11-2006, 01:05 PM
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sas
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Mine is 7300 but as I run a plain bearing turbo with cutback wheels (laggy)my turbo is delivaring power from 4200 upwards, so I use the revs to stop it dropping out of the power band between up shifts.
Simon.
Old 26-11-2006, 01:06 PM
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Simon...when does the car stop making power?

bassboy
Old 26-11-2006, 01:10 PM
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sas
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Current set up is tailing off at 6900.

Simon.
Old 26-11-2006, 01:17 PM
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Originally Posted by sas
Current set up is tailing off at 6900.

Simon.
thats very impressive!! most ZVH's dont seem to want to rev past 6k...any idea why you think that is?

bassboy

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Old 26-11-2006, 01:26 PM
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I have my theries(spelling?) but mine easly revs to the 7300 rev limit in the first 4 gears I just have to get another 300 revs to reach it in 5th. I have nos but have not used it yet!

Remember I have a 8.8:1 CR
The newman cam spec is for big revs (new profile coming shortly)
The inlet manifold can cope with high gas speeds
Sound bottom end

That is just a few points.

Simon.
Old 26-11-2006, 05:05 PM
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limiter @ 8400rpm on the old cvh, with no rocker stud issues.
Old 26-11-2006, 05:13 PM
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Thats very impressive Andy, what amount of valve lift were you running?
Is the spec of your old engine listed somewhere?
Simon.
Old 26-11-2006, 05:23 PM
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Unsure of the lift, the power peaked high aided by a Newman cam, short Throttleboddies(Bike) on inlet side & Long(equal lengthed)manifold on the exit.

hth
Old 26-11-2006, 08:22 PM
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Andy, did u have a custom plenum madefor the tb's?
Old 26-11-2006, 09:12 PM
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Originally Posted by Andy_R
limiter @ 8400rpm on the old cvh, with no rocker stud issues.
Bloody hell


Old 26-11-2006, 09:50 PM
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Yup Rick the Inlet(Plenum) was needed in order for the ITB's to be used. The design has been revised again for the ZT Build.
Old 26-11-2006, 10:11 PM
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any pics???
Old 26-11-2006, 11:41 PM
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yeah any pics???
Old 27-11-2006, 12:05 AM
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Sorry no pics of the new one lads! Im sure there's old pics floating about of the last one though!
Old 27-11-2006, 12:33 AM
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Originally Posted by Andy_R
Sorry no pics of the new one lads! Im sure there's old pics floating about of the last one though!
theres your old set up mate,totally different now but


Old 27-11-2006, 12:50 AM
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I love that engine bay

Cant wait to see the Zetec T conversion
Old 27-11-2006, 12:19 PM
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correct me if im wrong but are these the pics u need of the your zetec T conversion.....

Old 27-11-2006, 03:57 PM
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Originally Posted by turbotoaster
correct me if im wrong but are these the pics u need of the your zetec T conversion.....

What can I say, YUP thats mine as of a few weeks back.

Call the cops my cars been pap'ed
Old 30-11-2006, 08:21 PM
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we want more pics!!


i have seen it al before but think other people need to see it
Old 30-11-2006, 09:41 PM
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AVA Top guys
Old 30-11-2006, 11:39 PM
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my rocker came out at 6500 the rev limit on the old ecu. what a chunt it was
Old 02-12-2006, 11:28 AM
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Originally Posted by scotty86d
my rocker came out at 6500 the rev limit on the old ecu. what a chunt it was

Did you check your valve spring clearance?
whats your spec?


i used to have issue's on one of my old kent35 cam, i used to rev to just under 7000, and it broke a few rockers at different stages.
But never done it on my 1st kent 35 cam setup.

But i checked everything, and clearance's were fine.
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