max rpm
hi
I have Miata na 1840cc turbo 370 whp now I do some change up to 450 whp my engine wiseco pistons carrillo rods h beam head ferrea valves,retiners and dual valves springs(70lbs 35 mm) now I replace the oem camshaft (kelford 272/272 10mm ) who much rpm capable with hydraulic lifters? thanks |
Originally Posted by shaifrik
(Post 1163047)
hi
I have Miata na 1840cc turbo 370 whp now I do some change up to 450 whp my engine wiseco pistons carrillo rods h beam head ferrea valves,retiners and dual valves springs(70lbs 35 mm) now I replace the oem camshaft (kelford 272/272 10mm ) who much rpm capable with hydraulic lifters? thanks |
Thanks
I do a little check and maruha racing and toda racing have this sub. Some one have Experience with this company? What the best camshaft for rev limit 8500rpm 272:272 or 264:264 ? The booth camshaft i lift 10 mm Thank |
OEM oil pump?
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Originally Posted by Erat
(Post 1167668)
OEM oil pump?
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Originally Posted by shaifrik
(Post 1167670)
Yes
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You're gonna need a billet oil pump for either 8500rpm or 450whp, for both you definitely want one.
I can't help you on cam selection, but for 450whp I wouldn't think they are a big deal, Soviet hit that on stock cams. |
Like this?
http://www.toda-racing.co.jp/en/product/other/b6-oilpump.html |
Originally Posted by thenuge26
(Post 1167674)
You're gonna need a billet oil pump for either 8500rpm or 450whp, for both you definitely want one.
I can't help you on cam selection, but for 450whp I wouldn't think they are a big deal, Soviet hit that on stock cams. My gol is power stable to 7800 and after the power down until 8300rpm |
Not sure about that toda one, this is what most of the people here use: Mazda\Ford\Mercury Oil Pumps
I'm not sure I'd risk an engine costing several thousand dollars to save a few dollars on the oil pump. |
you need billet oil pump if you rev that high.
that should be your #1 concern, like these guys are telling you |
Also ATI harmonic ballancer. Especially if you plan on making power that high for an extended period of time.
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I'm surprised he hasn't blown the engine with stock pump and 370whp already
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Originally Posted by thenuge26
(Post 1167713)
Not sure about that toda one, this is what most of the people here use: Mazda\Ford\Mercury Oil Pumps
I'm not sure I'd risk an engine costing several thousand dollars to save a few dollars on the oil pump. who much oil pressure the engine able carry? thanks |
The motor will take the pressure those pumps put out, many people use there pumps.
Miataroadster.com sells billet pump gears as well. Use super tech shim under bucket, and super tech lash caps. Make sure to have your spring pressures tested to match kelfords specs |
Ask your engine builder, I think the pressure you want depends on your bearing clearances.
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10 psi per 1000rpm is a good rule if thumb
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Originally Posted by thenuge26
(Post 1167936)
Ask your engine builder, I think the pressure you want depends on your bearing clearances.
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the kelford has arrive :)
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