Sounds like the typical cycle of break it and build it up ;-)
TonyC
-----Original Message-----
From: Kyle Vanditmars <kylevan@telus.net>
To: dakota-truck-moderator@bent.twistedbits.net
<dakota-truck-moderator@bent.twistedbits.net>
Date: Thursday, August 21, 2003 12:53 AM
Subject: Re: DML: Burnt Valve
>
>Michael Clark wrote:
>> If it turns out that I have a burnt valve, will the
>> head need to be machined? If the head needs to have
>> the valve seat machined could that cause a flow
>> differential between it and the other head?
>>
>
>Ahem... I'm sure we've all been waiting to do this... it's time to...
><gameshow announcer voice> *SPEND MICHAEL CLARK'S MONEY* </gameshow
>announcer voice>
>
>I think that since you're gonna have to partially disassemble the
>valvetrain anyway to get the heads off, you'll need to get a longer
>duration/higher lift cam, with matching valvesprings, skookum pushrods,
>and some 1.6 roller rockers. Then, since that longer duration cam will
>raise the power band some (which will nicely complement the M1
>manifold,) and since the heads are off anyway you should get the heads
>ported, and maybe some larger valves while you're at it. By doing this,
>you ensure that you've evened out the flow between each head. And,
>since you're getting machine work done, you might as well mill the head
>a little bit, and bring that compression ratio up some. Now, once
>everything's back together, you'll probably have to make some
>modifications to the driveline to fully take advantage of the new setup.
> First, a higher-stall converter is in order, probably an APS Precision
>2400 or 2800 stall. You will also need a set of 4.10 gears and an ARB
>air locker diff. While you've got the rearend disassembled, you might
>as well get a lightened, balanced driveshaft. Now, you're making power
>beyond the RPMs that the transmission was set up to shift for, so you'll
>need a modified valve body for WOT shifts either just as the cam dies
>off or before the MP ECU cuts fuel, whichever comes first.
>
>What was the question again?
>
>
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:46:48 EST