I talked to a vintage racecar prep friend of mine today who said he used the
DW 3 layer metal gasket dry (per the instructions) with a cast iron head and
block at 10.5:1 compression ratio, torqued to 75 ft.lb. and has had no
leaks. The DW catalog included a high temp silicon rubber sealant which I
thought was intended to be used with the gasket but maybe I got it wrong.
Perhaps it makes a difference if the head is aluminum because of the
expansion differences. I am going to phone DW in the morning and get their
recommendation when I order the gasket to use with the aluminum head. I am
also going to use the DW uprated studs, nuts and washers. The washers have
a chamfered I/D on one side. Anybody know which side goes up and why? I
can also ask them that question.
Taken note of the different 0.012/0.016in rocker clearances from Michael
Oritt as I have an uprated cam and the roller rockers.
Dave Russell's point about eliminating the oil cushion in the ball/socket
contact before settings clearances is a good one and will try that as well.
I think standard springs in good condition will work OK unless you have high
valve lift or go to very high revs.
regards,
Peter Davis
56 100M
----- Original Message -----
From: Jonathan and Carole Quandt <fourqz@earthlink.net>
To: <healeys@autox.team.net>
Sent: Thursday, August 12, 2004 7:36 AM
Subject: 100M head gasket
> I purchased a DW steel gasket for use on my 100 with a cast iron head
> and the instructions stated that the gasket should be fitted dry.My
> head still seeps water at the number plate .What type of compound might
> I apply to a steel gasket ? Or does dry really mean dry. I also have
> noisy lifters and wonder if stronger valve springs might help in this
> regard
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