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View Full Version : RPW Thermoblock gaskets, annoyed!



jimay3672
28-07-2009, 06:39 PM
Hi Everyone, I just stumbled accross this, I don't think I will be buying from RPW again..

http://www.aussiemagna.com/forums/showthread.php?t=24621&highlight=reuse+manifold+gasket&page=2

This explains how I stripped the threads on my manifold, I knew I didn't do them up tight, I did them sissybaby tight but they stripped..

I wondered why what was pictured isnt what I got but didn't worry about it.
I wish I had of ordered one from these guys and saved over $100 ($100 includes the price difference, lower manifold replacement, lower manifold gaskets etc)

Hmm, not impressed..
I did notice the plenum is cooler but that's all I noticed.. car doesn't seem to idle better, perform better or anything..

White
28-07-2009, 06:43 PM
Hi Everyone, I just stumbled accross this, I don't think I will be buying from RPW again..

http://www.aussiemagna.com/forums/showthread.php?t=24621&highlight=reuse+manifold+gasket&page=2

This explains how I stripped the threads on my manifold, I knew I didn't do them up tight, I did them sissybaby tight but they stripped..

I wondered why what was pictured isnt what I got but didn't worry about it.
I wish I had of ordered one from these guys and saved over $100 ($100 includes the price difference, lower manifold replacement, lower manifold gaskets etc)

Hmm, not impressed..
I did notice the plenum is cooler but that's all I noticed.. car doesn't seem to idle better, perform better or anything..

i ordered one of these. so the actual gasket is reasombly thick correct? so i need to get longer bolts.

Jasons VRX
28-07-2009, 06:47 PM
i ordered one of these. so the actual gasket is reasombly thick correct? so i need to get longer bolts.

Ya shouldve yelled out Dan. You could had the plenum one of mine for $20. Ive only used the TB one on my car.

jimay3672
28-07-2009, 06:47 PM
Yes, it's about 5mm thick (from memory)
I used the same bolts as instructed, ended up stripping threads which according to the orginal manufacturers is because you need longer bolts..

Hmm..
The pics on the DIY guide on the RPW site are NOT what you get..

http://www.outlawengineering.com/mitsu6g72frame.html

Any of these pictures look familiar? minus the company name being there instead of scrubbed out..

White
28-07-2009, 06:49 PM
Ya shouldve yelled out Dan. You could had the plenum one of mine for $20. Ive only used the TB one on my car.

:headbange bring it tommorrow ill grab it of ya if thats cool with you.

Jasons VRX
28-07-2009, 06:56 PM
:headbange bring it tommorrow ill grab it of ya if thats cool with you.

Wont be coming to the meet tomorrow and the part is up at mannum, will remember to grab it next time im up there. I will check it on the 380 lower manifold i have to make sure it all matches up first for ya though (380 lower manifold has a extra stud/bolt hole on oneside that may be a issue)

White
28-07-2009, 06:57 PM
Wont be coming to the meet tomorrow and the part is up at mannum, will remember to grab it next time im up there. I will check it on the 380 lower manifold i have to make sure it all matches up first for ya though (380 lower manifold has a extra stud/bolt hole on oneside that may be a issue)

cheers jason.



hey jimmy did it include the throttle body gasket aswell.

jimay3672
28-07-2009, 07:07 PM
haha..

The first package did, then the second package included the plenum gasket..
The way it's listed on the website is slightly confusing.

if you buy the Thermo Block Throttle Body Gasket - 60mm you get the TB gasket
the Thermo Block Intake Manifold Gasket 6G72/74/75 gives you the manifold gasket.
Whatever you do make sure you use longer bolts or instead of costing $140 it will cost more.
I've spent $60 on a lower intake manifold, not sure how much the lower gaskets will cost.. grrr!

I wish I'd known these were a rip of of someone else's product and didn't include everything needed..

Jasons VRX
28-07-2009, 07:26 PM
haha..

The first package did, then the second package included the plenum gasket..
The way it's listed on the website is slightly confusing.

if you buy the Thermo Block Throttle Body Gasket - 60mm you get the TB gasket
the Thermo Block Intake Manifold Gasket 6G72/74/75 gives you the manifold gasket.
Whatever you do make sure you use longer bolts or instead of costing $140 it will cost more.
I've spent $60 on a lower intake manifold, not sure how much the lower gaskets will cost.. grrr!

I wish I'd known these were a rip of of someone else's product and didn't include everything needed..

I just helicoiled the lower manifold on mine, that also makes the threads much stronger.

The gaskets that go between the heads and lower manifold are around $12 each from mitsubishi. Part number for the gaskets is MR561678

jimay3672
28-07-2009, 07:31 PM
Any caveats to removing the lower intake manifold?
Doesn't look hard, It looks like I may be able to take the fuel rail off with injectors still connected? but obviously I will need to disconnect the fuel line..

Just wondering if I should get new o rings for the injectors and fuel rail..
What's the likelyhood the second hand lower manifold won't fit correctly? ie warped/uneven?

Hmmm..
Surely supercheap would have appropriate bolts to replace the stock ones?

White
28-07-2009, 07:36 PM
Any caveats to removing the lower intake manifold?
Doesn't look hard, It looks like I may be able to take the fuel rail off with injectors still connected? but obviously I will need to disconnect the fuel line..

Just wondering if I should get new o rings for the injectors and fuel rail..
What's the likelyhood the second hand lower manifold won't fit correctly? ie warped/uneven?

Hmmm..
Surely supercheap would have appropriate bolts to replace the stock ones?

the lower gaskets are metal. i wouldnt worry about getting new ones. they should seal ok. the injectors simply unbolt easy. the fuel line is a red clip that you pull up and then slide the hose off the rail. as for new o rings depends on condition.

also did the throttle body gasket fit ok. i think the 380 t/body is 68mm.

Jasons VRX
28-07-2009, 07:37 PM
Any caveats to removing the lower intake manifold?
Doesn't look hard, It looks like I may be able to take the fuel rail off with injectors still connected? but obviously I will need to disconnect the fuel line..

Just wondering if I should get new o rings for the injectors and fuel rail..
What's the likelyhood the second hand lower manifold won't fit correctly? ie warped/uneven?

Hmmm..
Surely supercheap would have appropriate bolts to replace the stock ones?

I leave the fuel lines hooked up. All i do is undo the 4 fuel rail bolts and lift the rails with injectors up that gives access to the 8 nuts that hold the lower manifold to the heads. There is also one bolt on the cam belt side of the engine (above the water pump) that is accessible once the front cam belt cover is removed.

White
28-07-2009, 07:38 PM
I leave the fuel lines hooked up. All i do is undo the 4 fuel rail bolts and lift the rails with injectors up that gives access to the 8 nuts that hold the lower manifold to the heads. There is also one bolt on the cam belt side of the engine (above the water pump) that is accessible once the front cam belt cover is removed.

same for the 380

jimay3672
28-07-2009, 07:44 PM
the lower gaskets are metal. i wouldnt worry about getting new ones. they should seal ok. the injectors simply unbolt easy. the fuel line is a red clip that you pull up and then slide the hose off the rail. as for new o rings depends on condition.

also did the throttle body gasket fit ok. i think the 380 t/body is 68mm.

Thanks guys, I thought it would be that easy.

Throttle body gasket fits, I have a 3.0L TF btw
I did have to leave the bolt for the bracket that connects to the engine off (hole was off by probably 1.5mm), I'm considering removing the brackets alltogether...

White
28-07-2009, 07:45 PM
Thanks guys, I thought it would be that easy.

Throttle body gasket fits, I have a 3.0L TF btw
I did have to leave the bolt for the bracket that connects to the engine off (hole was off by probably 1.5mm), I'm considering removing the brackets alltogether...

soz thought you had a 380. must be thinking of the other jimmy.

Jasons VRX
28-07-2009, 07:48 PM
same for the 380

Pretty much. The 380 only has 1 line to the rail (returnless system) where as the magna has the fuel line in and the retun line with fuel reg back to the fuel tank.

380 manifold on the left, magna on the right:
http://i614.photobucket.com/albums/tt226/zoomie_73/Picture054.jpg

380 manifold on the right, magna on the left:
http://i614.photobucket.com/albums/tt226/zoomie_73/Picture053.jpg

jimay3672
28-07-2009, 07:51 PM
If it helps, the gasket I got did have extra holes, looking at the 380 manifold I now know what they're for!

White
28-07-2009, 07:51 PM
after seing those pics jase i wont grab the gasket off you. the 380 is a bit different at front end. be more use to another member.

Jasons VRX
28-07-2009, 07:55 PM
after seing those pics jase i wont grab the gasket off you. the 380 is a bit different at front end. be more use to another member.

That one extra hole probably doesnt actually do much (the magna gasket would probably still seal properly) but no worries, saves me looking for it in the shed lol

Madmagna
28-07-2009, 08:02 PM
Just get standard gaskets, these are pretty much useless and this has been shown many times

The air moves past the area fast and does not heat up that much
Secondly, the bolts heat up the alloy and transfer the heat

The gains to be had with these so called thermo gaskets I would like to see on a Dyno as the ones I have seen to date had no improvement on the Dyno at all

This way you can just reuse what you already have given that they are the alloy gaskets there already

Jasons VRX
28-07-2009, 08:07 PM
Just get standard gaskets, these are pretty much useless and this has been shown many times

The air moves past the area fast and does not heat up that much
Secondly, the bolts heat up the alloy and transfer the heat

The gains to be had with these so called thermo gaskets I would like to see on a Dyno as the ones I have seen to date had no improvement on the Dyno at all

This way you can just reuse what you already have given that they are the alloy gaskets there already

Correct. Hence why the plenum "thermoblock" gasket aint on my donkey engine.