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Originally Posted by boosted
(Post 11570055)
My thinking with re using te gaskets I'm currently running was that if it's ok to re use a decomp plate, split a new MLS head gasket and put the plates either side with some hylomar then re using basically sound looking gaskets with a bit of hylomar would be fine, and they have been with 7000 miles 1.5 bar and 300+hp. No coolant use or pressurising coolants system at all.
I think the new MLS gaskets I have bought will be fine for what I'm doing, providing the block and heads are flat and clean and that I don't cook the engine (this aneals the bolts and you loose all clamping effort) Still brain storming head stud ideas Will be interested to see what you come up with head stud wise, I'm on OEM head bolts, but i'm not planning to run 500+ brake so didn't really need them. |
I too may just run the original head bolts. Peak torque and boost will not be much higher than I'm running just now.
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Originally Posted by piehole1983
(Post 11570312)
I just noticed it says C*NT on your turbo box lol
Aye the parcels have to go through a fair process at work to get to me! |
So the std 16g is a 33mm penny with a 25mm WG port. I will go check mine now
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Appears to be about 20mm! No probs, I will remove it and get busy porting.
http://i959.photobucket.com/albums/a...psft9niflj.jpg |
Good work, I would also check the actuator and see what pressure it opens at as I've heard they can be as low as 0.25 bar.
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Originally Posted by ScottyPPP
(Post 11571703)
Good work, I would also check the actuator and see what pressure it opens at as I've heard they can be as low as 0.25 bar.
Just popped the ex housing off, the machining and casting quality is actually quite good, the problem with the WG port is that it's a cast hole, not finish machined at all, still it's not going to take long to bore it out and finish it off. Not in the middle either, but I'll work round that. http://i959.photobucket.com/albums/a...psm2y1njmj.jpg http://i959.photobucket.com/albums/a...pslp0kfaad.jpg http://i959.photobucket.com/albums/a...psgxxvkmyn.jpg |
That is a fair way off centre :lol:
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Originally Posted by ScottyPPP
(Post 11571772)
That is a fair way off centre :lol:
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Im enjoying reading this thread :) .How much was the new turbo again,the quality does look good
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Originally Posted by Rick2014
(Post 11572068)
Im enjoying reading this thread :) .How much was the new turbo again,the quality does look good
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Ok, so I'm not worrying about te turbo too much just now as the ter shafts cant take the power I have just now!
Snapped one of my machined shafts on the weekend. Hmmm. http://i959.photobucket.com/albums/a...pso2sip4xj.jpg Time to manufacture some billet shafts from steel |
Start with some 1 1/2" 4140 billets
http://i959.photobucket.com/albums/a...pskfzvtrt1.jpg Turn one side http://i959.photobucket.com/albums/a...psfjjojj3c.jpg http://i959.photobucket.com/albums/a...psxmdv5elv.jpg Then the other http://i959.photobucket.com/albums/a...ps170kmcyr.jpg There you go, just need to pop some grooves in them, then spline both ends. Unsure as yet of any heat treatment required? Perhaps someone in here knows? |
Awesome work! Wouldn't heat treatment make the metal harder and more brittle?
I've seen people heating steel and dunking it in used engine oil to add carbon to the steel and making it stronger. |
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Originally Posted by piehole1983
(Post 11572654)
Awesome work! Wouldn't heat treatment make the metal harder and more brittle?
I've seen people heating steel and dunking it in used engine oil to add carbon to the steel and making it stronger. Although 4140 is already tempered (strength) and through hardened to 18-22 rc. I'm no metallurgist so don't really know what's required. All I do know is oem shafts are made of cheaper steel and only case hardened, Hence my failure here |
Perhaps you'd be ok they way they are then. It seems you have easy access to the materials and you're doing all the work yourself, if that was me I'd make them up and try them as is. No point in the added expenditure if they'll do the job as they are.
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Originally Posted by piehole1983
(Post 11572700)
Perhaps you'd be ok they way they are then. It seems you have easy access to the materials and you're doing all the work yourself, if that was me I'd make them up and try them as is. No point in the added expenditure if they'll do the job as they are.
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Have you thought of having the finished item micro peened in the spline area, & cryo tempering, use to work on McLaren gearbox output shafts a few years ago.
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Hardness is really for wear, on the splines if there's movement for example.
I'm not interested in that, strength is what I'm after! Keeping some flexibility may help the shaft survive too |
Originally Posted by MOTORS S GT
(Post 11572713)
Have you thought of having the finished item micro peened in the spline area, & cryo tempering, use to work on McLaren gearbox output shafts a few years ago.
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Originally Posted by boosted
(Post 11572712)
My thoughts exactly sandy
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Originally Posted by boosted
(Post 11572719)
Thought about shot peening as that is readily available to me. Cyro tempering sounds dear!
Cryo is not that expensive, I have cranks done for the EG33 builds, blocks & rods, have a look http://www.frozensolid.co.uk/index.p...k45au1q15elf47 I reckon 4 shafts about £120.00 |
Originally Posted by MOTORS S GT
(Post 11572732)
Cryo is not that expensive, I have cranks done for the EG33 builds, blocks & rods, have a look http://www.frozensolid.co.uk/index.p...k45au1q15elf47
I reckon 4 shafts about £120.00 |
Cracking work as usual!
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Originally Posted by ScottyPPP
(Post 11573169)
Cracking work as usual!
Started to the splining, will have both shafts finished tommorow. http://i959.photobucket.com/albums/a...psihxnb62c.jpg |
Shafts are finished. Just need to paint them and build them up now.
http://i959.photobucket.com/albums/a...ps5k0vn5ut.jpg http://i959.photobucket.com/albums/a...psho6nmrgy.jpg http://i959.photobucket.com/albums/a...psmrvdgezs.jpg |
Very nice :)
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quality work :)
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Cheers guys, I hope the work as good as they look!
Built them up and fitted them tonight. I'll leave it a few days before I try any launches! http://i959.photobucket.com/albums/a...psrtkt0q0k.jpg |
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