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Before you fit it tweak your wastegate, you'll have lot less boostcreep
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are you meaning porting it?
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Originally Posted by DNA54
(Post 1241536)
are you meaning porting it?
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Not the arm itself, but the bush.
The wastegate is free to rotate ;) Is it strange? It's an original garrett |
looks badly casted....possible failing point I presume
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Yesterday I clocked the turbo and checked the actuator: feels like a 7 psi unit.
I also began to weld a new manifold to head flange because mine is warped, and there's a little leak even whith a new oem gasket.. The only issue: oil line. I need to connect somehow an 8mm copper pipe to the restrictor. This is what I could find https://www.miataturbo.net/attachmen...ine=1434700791 Terrible, isn't it? And heavy as hell. |
diy "turbo no hit block" '00 BP miata
Brass is not as strong as steel and it is better to use less adapters when possible. Each is a possible point of failure.
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Originally Posted by DNA54
(Post 1241846)
The only issue: oil line.
I need to connect somehow an 8mm copper pipe to the restrictor. |
Originally Posted by Joe Perez
(Post 1241881)
You are planning to use copper pipe to supply oil to the turbo?
Sixshooter: I know that... the restrictor itself is brass. I'm finding a different solution, but it's difficult to find npt stuff in Italy |
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Originally Posted by tjeerd
(Post 1241537)
Yep, sorry...not a native speaker....
https://www.miataturbo.net/attachmen...ine=1434721586 The wastegate port cast is not bad at all, I think to leave it as-is for the moment. If a creep problem appears, I will port it. |
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Today I began to work
I found why everyday the boost was a little bit less: the wastegate couldn't close completely. The flapper was slightly bent: https://www.miataturbo.net/attachmen...ine=1434844507 https://www.miataturbo.net/attachmen...ine=1434844507 https://www.miataturbo.net/attachmen...ine=1434844507 https://www.miataturbo.net/attachmen...ine=1434844507 properly made shaft: https://www.miataturbo.net/attachmen...ine=1434844507 turbine housing differences: https://www.miataturbo.net/attachmen...ine=1434844507 |
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Today I clocked the turbo, made an inlet flange and other misc
: https://www.miataturbo.net/attachmen...ine=1435248317 https://www.miataturbo.net/attachmen...ine=1435248317 https://www.miataturbo.net/attachmen...ine=1435248317 https://www.miataturbo.net/attachmen...ine=1435248317 |
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More progress:
https://www.miataturbo.net/attachmen...ine=1435431122 https://www.miataturbo.net/attachmen...ine=1435431122 https://www.miataturbo.net/attachmen...ine=1435431122 https://www.miataturbo.net/attachmen...ine=1435431122 https://www.miataturbo.net/attachmen...ine=1435431122 Now, first impressions: it feels slower over 5500-6000 rpm at the same pressure of the chrubo potato, but well.. it's very very funny to drive! first two gears are just a spin button, the third gear spin the tire a little bit, but enough to false the virtualdyno log (around 270hp at 210kPa) Now, time to tune this... thing. I'm in doubt about the advance table: I've modified (internet inspirated) my table this way https://www.miataturbo.net/attachmen...ine=1435431122 What does it seems?? |
Holy header wrap, Batman! :) What kind of wrap, and what are those metal ties you used to clamp the ends tight?
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Originally Posted by huesmann
(Post 1244686)
Holy header wrap, Batman! :) What kind of wrap, and what are those metal ties you used to clamp the ends tight?
The ties... they comes with the wrap News: I tried the new advance table for like one gear, and it knocked... back to the previous one for now. I also destroyed the compressor wheel, now the turbo is at the rebuild shop |
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oh man.......
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