Cut And Shut Thermosts Housig

[talky]

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

[ISL33P]

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

[talky]

any pipe is ok lol so bascialy stick it in the housing and weld it up and she shpuld be good to go? cheers for the help man

[ISL33P]

as long as its 1.5" it should be fine

[talky]

you got any pics offf some you have done ??/ could i just chop it and eave it short or will this give me some problms with the thermosts opening up or something

[75coupe]

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]

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 ??

[ISL33P]

post a pic of a housing and I will draw what angle it needs to be cut

[talky]

havent got a pic manlol might just chop it and get a bead welded on the end of it ???/ umm rb30 ones a shorter unsure if the bolt pattern is the same?

[willsy]

hey m8 i used an r31 one on my rb mainly becasue mine was cracked lol but worked a treat only down side was the hose now rests on teh alternator more but was silicon so was alright

[krayzie32]

+1 for rb30 thermostat housing its 1/3 the lenGth and steel not alloy...

[talky]

yeah ended up doing that but the plenum was just a head ache now got a standard one back one

[willsy]

nah there not if u buy a kilkenny castings one there cast aluminum