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Old 04-28-2016, 09:10 AM   #1 (permalink)
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headers for 3.9 and head shaving question

Hey guys. .So , I pulled the heads off to fix a seeping head gasket and get a valve jobbyjob. . From my searching , the original thin metal gaskets are hard to find and the composts seem to work better anyway. .Im have 40 thousands shaved to compensate for the HG difference. . I know most just leave it alone but its not that expensive to have done. anyone have experience doing this? Results?

I would also like to pick up a set of headers while im in there. . I know there is not much point but I have a nice custom exhaust and the stock manifolds are some of the most restrictive I have ever seen. .Any US sites to source a set of headers for the old turd? (or if anyone has a set of used for sale, PM me please)

Thanks , Travis 520-661-3459
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Old 04-28-2016, 09:39 AM   #2 (permalink)
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I have a headgasket kit…brand new and I'm not going to use it


can't answer your question, just throwing about some unused parts
2001 D2 Ruffstuff LC 80 series front/rear/ARB/Detroit, Longs, 37" creepy's, 14" ADS 2.125 Coilovers, 1.6 lt230 w/Ashcroft Under Drive PSC hydro steering Hellfire Hi Steer Knuckles...a lot of revisions and a lot of weldin'
1983 110 RHD Pick-up
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Old 04-28-2016, 09:49 AM   #3 (permalink)
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I think there are some headman headers for the RRC. Not sure what you have, but they can also be made to work on a DI with a little manipulation. This is all assuming that they still make them.

If they a NLA, then you could look into modifying some P38 headers to make them work.
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Old 05-02-2016, 06:15 AM   #4 (permalink)
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0.040" is twice what the manual indicates is maximum-even for switching from stamped steel to composite. That said, I have a coupla pairs well below that and they seem to be just fine. Might want to check lifter preload and while you're at it, inspect your camshaft VERY closely as these engines eat camshafts.

EVERY Land Rover V8 head job needs to have the heads machined. No one with any knowledge would even suggest not doing so. I am not certain they don't warp the first time the engine is fired up-if not while being torqued.

Hedman makes some nice headers that should fit OK on a 3.9 as the only major conflicts I have personally seen were related to clearance issues with the knock sensors on the DIS trucks. In the event you DO have interference, a coupla washers on the top and bottom of the motor mounts will do the trick better than bashing the tubes to fit.

Make damn sure you use the TTY bolts ERR2943 and ERR2944 with the composite gaskets or you'll be calling me for another set of gaskets and bolts.

The TTY process may be foreign to you, but please, follow the 15-20 nm and then 90' and another 90'. Again, do something else and you'll be calling me for more gaskets.

The BEST place to get headers is D&D Fabrications, Mark LaGrou 810-798-2491. Tell him I referred you please.

Last edited by PTSchram; 05-02-2016 at 06:33 AM.
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