crazy_rich Posted May 1, 2006 Share Posted May 1, 2006 Hey, im having a nightmare making a crossmember for my w57 supra box for the capri. has anyone else done it before? or know of anyone who has? my problem lies in not being able to source a low enough profile rubber mount to maintain sufficient clearance between the crossmember and the ground. At this stage the gearbox/bellhousing are set to be the lowest part of the car. Ive tried using both the standard capri and the supra rubber mounts but they are both too tall. does anyone know of a slim profile one i could try out? I'd like to post some pictures to help explain what i mean, but i cant get hold of a camera, i'll do my best though. any help would be very much appreciated, cheers guys. Quote Link to comment Share on other sites More sharing options...
v3k Posted May 1, 2006 Share Posted May 1, 2006 post me a picture and some measurements (interier diam etc).... I work at a rubber factory and will see what I can find/make you Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted May 1, 2006 Author Share Posted May 1, 2006 thanks for ya help, should have a workin camera tomorrow, is it considered solid mounting to bolt 2 plates together with a slab of rubber sandwitched in between? as it will be able to compress but not stretch. Quote Link to comment Share on other sites More sharing options...
v3k Posted May 1, 2006 Share Posted May 1, 2006 right just looked at the ltsa webpage for low volume certs. I'll need a pic of the original mounts (escort and supra) and the measurements. I cant promise anything (about it being made...) but if it is, it will be strong! Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted May 2, 2006 Author Share Posted May 2, 2006 took some pics, labelled the rubbers, i figure that by the time i adapt the capri one to bolt to the supra box it'll be another 15mm thicker. athough i reckon i could mow 10mm off the top in the mill, not too keen though. Mate at work suggested electrical insulation rubbers from an electrical supply store, reckon a few of those would be strong enough? [/img] Quote Link to comment Share on other sites More sharing options...
v3k Posted May 2, 2006 Share Posted May 2, 2006 If you are 'making' rubber mounts for the gearbox you have to realise that it encounters stress, contact with oil and other road crap, and under stress the ozone in the air attacks the rubber. You really need neoprene (or highly protected natural)... I doubt whether the electrical ones will be. If you dont use the right rubber you will need new ones in about a week. Anyway, my idea from what you have is this: Take supra mount. Place under it a steel bar. At each end of steel bar, (length = width of trans tunnel at that point). Have a mount/buffer/ slab of rubber with two holes that you bolt through to secure mount. I.e. end bolts pass through steel bar, rubber mount then into body work. (using the old, moved capri gearbox mounting point.) I'll try and draw a pretty picture later... I dont know if the above makes sense... Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted May 2, 2006 Author Share Posted May 2, 2006 pretty picture sounds like a fantastic idea, from what i understand if i attach a bar under th supra mount it'll be scraping on the ground. or are you suggesting solid mounting the crossmember to the g/box and rubber mounting the crossmember to the car? Quote Link to comment Share on other sites More sharing options...
peteretep Posted May 2, 2006 Share Posted May 2, 2006 theres a place that suspension tech in auckland deals with that makes nolathane stuff, just need a cast, tis that really hard rubber thats not affected by oil etc Quote Link to comment Share on other sites More sharing options...
v3k Posted May 2, 2006 Share Posted May 2, 2006 Here goes...... Its crap but I hope you get the idea. Theoretically, the lowest point will be the bolts.... about 25mm below the bottom on the original supra gearbox mount.... Ahem, I think thats what I was trying to say Are those question mark bits (in the pic) rubber? Quote Link to comment Share on other sites More sharing options...
v3k Posted May 2, 2006 Share Posted May 2, 2006 theres a place that suspension tech in auckland deals with that makes nolathane stuff, That would be the business.... maybe too hard for a mount though...? They might be able to sus you out something Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted May 2, 2006 Author Share Posted May 2, 2006 mint picture dude... the question marked bits are rubber, basically i cant use the supra mount because even the bottem of that is gonna be too close to the ground (my cars going to be very low) and thats my problem. im quite interested in that place in auckland, i wonder if anyone in chch does that kinda thing. making a mould isn't a problem, ive got access to a machine shop. basically it would just be cheaper and easier to find an exsistng mount of another kind of car that i can adapt and use. and im certain sandwitching rubber with a throughbolt (like in your picture) is considered solid mounting. what a pain in the ass. might just solid mount the fucker, steel plates etc. really intersted in what kind of exsisting rubber mounts you other guys have standard in your cars, they usually seperate from the crossmember, as in my pictures. a 25mm tall profile or less would be perfect. Quote Link to comment Share on other sites More sharing options...
peteretep Posted May 2, 2006 Share Posted May 2, 2006 there would be very bad vibrations if you solid mount it Quote Link to comment Share on other sites More sharing options...
v3k Posted May 2, 2006 Share Posted May 2, 2006 Wont the sump be lower than the gearbox crossmember?? If so wont that be a serious hazard to ripping your sump off? (If your car is that low)... because if I remember correctly... a supra box is shaped like ___ .....\______[] ........___x__ ____/ Where the x = the attachment point for the crossmember? What I am asking is that if you are having issues with clearance involving the gearbox mount.... how low are the other bits and pieces Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted May 2, 2006 Author Share Posted May 2, 2006 The rest of it is all pretty low, i've attached some (rather blurry) pictures. my sump is definately vulnerable, i'm planning on rotating the crossmember back around 180deg and using a rear sump (if i can find one) if i raise the engine up any higher i'll have to chop my tunnel out so that the part of the gearbox that the shifter bolts to doesnt hit just forward of the shifter hole. (my original worries were that the standard plenum would hit the bonnet, but im running itb's now so thats not a problem) im starting to think i should tweak my mounts, chop the tunnel and raise it all up 20mm or so. under the car, looking side onto the gearbox and the crossmember i startd to make same view, just back slightly front on with the sump top right. Quote Link to comment Share on other sites More sharing options...
v3k Posted May 2, 2006 Share Posted May 2, 2006 Cut and raise the trans tunnel..... Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted May 2, 2006 Author Share Posted May 2, 2006 so ya reckon thats the best plan of action eh? sweet, it certainly would sort it all out. cheers for your advice man, much appreciated. Think i'll hold off until i find a rear sump though, do it right this time. Quote Link to comment Share on other sites More sharing options...
v3k Posted May 2, 2006 Share Posted May 2, 2006 No problem... Good luck with the rest of the car, I doubt you will regret raising your running gear (centre of mass will raise, but if you are lowering car it will counter act that). But I think you would regret not raising the running gear when you run over a twig and it tears out your sump and gearbox. Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted May 2, 2006 Author Share Posted May 2, 2006 bloody twigs eh? Quote Link to comment Share on other sites More sharing options...
peteretep Posted May 2, 2006 Share Posted May 2, 2006 damn steel twigs is that the height that the gearbox would sit at?? if so damn thats low, raising it all up would be way better, you probably wont notice it that much. Quote Link to comment Share on other sites More sharing options...
TygerTung Posted May 2, 2006 Share Posted May 2, 2006 You must consider that if you solid mount the gearbox you will also need to solid mount the engine if you want it to pass certification. Quote Link to comment Share on other sites More sharing options...
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