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Cut And Shut Thermosts Housig

talky

By talky,
in Fabrication

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talky Proficient

talky

Posted
Posted

hey guys

got a new plenum on my rb20 .but it seem to fouil out on the thermosts housing !

question can i flamin mongrel and shut it in the middle to shorten it ?

or can i just trimmed the edge off of it and get a lip welded on it ?

dose the thermosts housing have to be a certent lenght

any help would be much appreciated

thanks in advance

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https://www.sau.com.au/forums/topic/323794-cut-and-shut-thermosts-housig/
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ISL33P Proficient

ISL33P

Posted
Posted

Happens with both rb20 and rb25's. Just cut the neck off on an angle, machine some 1.5" tube, put some grooves in it to stop the hose blowing off and weld it back on. Make sure you clean the housing real well with some wire brush on the inside and outside, overtime the coolant gets inside the aluminium and can make it an absolute pain int the ass to weld...trust me haha

75coupe Grand Master

75coupe

Posted
Posted

I recently did this to my thermostat housing, I just got a alloy welder to weld it back on after I had cut the tube bit off the dome housing part and gave it an angle, it is hard to weld though apparently, getting a weld without inclusions is pretty hard, the welder had to clean, clean and clean it and ended up doing it twice because of porosity problems...

I should of taken a photo, make sure you either get them to put a bead of weld around the hose outlet so there is something to help hold the hose on or use the original end bit... I actually ended up makging it a tad shorter as well to make it fit nice, the rad hose has a tiny bit of length to give.

do a search for RIPS plenum for RB25 they use to include a modified thermo housing as part of the kit...

talky Proficient

talky

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Posted
I recently did this to my thermostat housing, I just got a alloy welder to weld it back on after I had cut the tube bit off the dome housing part and gave it an angle, it is hard to weld though apparently, getting a weld without inclusions is pretty hard, the welder had to clean, clean and clean it and ended up doing it twice because of porosity problems...

I should of taken a photo, make sure you either get them to put a bead of weld around the hose outlet so there is something to help hold the hose on or use the original end bit... I actually ended up makging it a tad shorter as well to make it fit nice, the rad hose has a tiny bit of length to give.

do a search for RIPS plenum for RB25 they use to include a modified thermo housing as part of the kit...

thanks heaps mate doing my head in over this just wanna get ot on already ! did u notice any power gains response with the new plenum ??

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