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Post by CHR15 on Apr 21, 2014 15:25:33 GMT
38mm random shot of the fit between the tube and the inside of the head spigot just need to mitre 1+4 into 2+3 which is the epic difficult bit. then cut the wastegate flap out the new turbo bake at 200 degrees until golden brown, then weld in a divider plate. housing is back in the oven to cool down over night. will skim it off tomorrow.
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Post by CHR15 on Apr 23, 2014 19:21:43 GMT
1+4 welded in tonight and skimmed the housing
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Post by CHR15 on Apr 28, 2014 18:28:01 GMT
wizz wizz and more shiny things appear. which bolts onto:
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drzsimon
Tyrannosaurus Rex
Posts: 70
Bikes: GSXR 7/1216 turbo, Buell 1125, Buell XB9, Buell XB12, Yamaha Slider 70cc
Reg: Jun 15, 2013 19:13:15 GMT
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Post by drzsimon on Apr 29, 2014 14:38:44 GMT
Super quality work!
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Post by nitro on Apr 29, 2014 16:37:24 GMT
Nice header! Like them!
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Post by duckndive on Apr 29, 2014 17:23:51 GMT
OOOh Sexy Outrigger Plate...................... You could sell them.....
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Post by nicearris on Apr 29, 2014 19:59:46 GMT
Luvvvvly bit of work there chap!! Whats the reason for the plate to block off the wastegate hole? I welded mine shut! Are you going to use it for summat clever?
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Post by CHR15 on Apr 29, 2014 22:11:00 GMT
OOOh Sexy Outrigger Plate...................... You could sell them..... you never know..... Luvvvvly bit of work there chap!! Whats the reason for the plate to block off the wastegate hole? I welded mine shut! Are you going to use it for summat clever? the internal wastegate hole is used to feed the external wastegate rather than teeing off the headers. i just need to open the hole up a bit.
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Post by katana on Apr 30, 2014 19:01:56 GMT
the internal wastegate hole is used to feed the external wastegate rather than teeing off the headers. i just need to open the hole up a bit. You may find that makes the turbo boost spike. The wastegate tee'd off the headers solution takes the energy away from the turbine before doing any work so reducing excess boost quicker. it will work but it does have downsides.
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Post by CHR15 on Apr 30, 2014 19:28:00 GMT
i kind of see what you mean, i just wonder what the efficency difference between a wastegate tee'd off the headers in the same direction as the gas is flowing, as compared to one which tee's off in the direction opposite to flow.
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Post by CHR15 on May 4, 2014 17:18:01 GMT
outrigger plate
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Post by slingy1052 on May 5, 2014 3:57:33 GMT
WOW, thats Billet porn right there. Luvin this build Chris, i take it you gonna use an external starter on this motor? Interested to see how you design your offset sprocket as well. Keep the photo's coming
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Post by CHR15 on May 5, 2014 13:23:53 GMT
Outboard starter is the eventual plan.
Need to find some trackside minions to help before I can do things like that though.
I need to have a think about the sprocket situation. It doesn't need to move very far because I'm using a Busa wheel with a flat slick so it just needs to be supported.
I'm questioning wether I can use the outrigger plate plus some shims to control the sprocket end float rather than the original nut.
I can't see any glaring issues with that, but that makes me think there's something I'm not thinking about.
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Post by duckndive on May 5, 2014 16:20:07 GMT
The outrigger on my GSX motor uses a bearing that fits inside a recess in the sprocket...the bearing is mounted on a stub that is "correct length" bolted to the outrigger plate ...
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Post by slingy1052 on May 6, 2014 6:19:37 GMT
Yeah, thats exactly how i did mine. But my old 1052cc lump came to me well used and the output splines are really worn compared to my old 750 which was perfect, so cant help but think its been run with a loose sprocket nut for a period and the constant lashing, back and fourth between accell and engine braking has coursed the extra wear. Having a super tight nut negates all that. This then made me think that the way i had done mine was not so good BUT, i also dont like the idea of having a nut trapped behind a bearing that i cant lock in position. I think on Yantosh's GSXR it came loose and wound out against the bearing and preloaded the transmision to a point that it seized! So, pro's and cons to each way i suppose.
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