| Re: [GMCnet] Thorley & Remflex install ? [message #155199 is a reply to message #155101] |
Tue, 03 January 2012 09:08   |
Richard Smith
Messages: 14
Registered: February 2004
Karma:
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Junior Member |
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Jim
I was trying to say to torque the center bolt at 75 percent of the
other 4 with would be about 19 ft lbs.
I the past I have re torqued the bolts on the exhaust manifolds
several times and they have never leaked - it works.
Some have said that it is very difficult to position the torque
wrench, so some creative torquing is in order.
Sorry about the confusion.
Richard 76 Glenbrook
at the Castle in CO
On Mon, Jan 2, 2012 at 11:17 AM, Jim Kanomata <jimkanomata@gmail.com> wrote:
> Richard,
> I do not know where you obtained the info. to torque the center to the
> higher amount, but it should be the other way.
> The 4 in line bolt pattern is the most critical. Leave the top center only snug.
> The key is to re torque the other 4 after you drive it for 500-700
> miles as they need to seat.Running the engine only is different than
> driving it with load.
> I do not dream up these procedure's, but acquire them from other shops
> and from our customers, as they give us feedback and we also practice
> these at our shop.
>
>
>
>
>
> On Mon, Jan 2, 2012 at 8:35 AM, Craig Lechowicz
> <craig.lechowicz@sbcglobal.net> wrote:
>>
>>
>> Richard,
>> I put my Thorley's on with the original thin gaskets. After a couple of years the drivers side went bad. I replaced that one side with a Jim K Remflex one earlier this year. I didn't put any sealer on, or any locks on. I've only got 500 miles or so on it since then, but so far, working great. I ran it about 1/2 hour and re-tightened once, very tight, with a short box end for the 4 bolts, and just snug on the center bolt. You can get a torque wrench in there, but it requires a lot of contortions, possibly a universal (which will destroy the accuracy of the readings) and is hard to read, so I didn't bother. The Remflex gasket seems pretty forgiving of mis-torquing. Their instructions say a low figure (maybe 15-20 ft. lbs.) vs. 35 or 40 for the Thorley instructions, but most people on this forum said to tighten the heck out of them, and that seems to be working for me.
>> --
>> Craig Lechowicz
>> '77 Kingsley, Waterford, MI
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>
>
> --
> Jim Kanomata
> Applied/GMC, Fremont,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
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