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Old 09-02-2014, 08:41 AM   #1
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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

Last edited by shaifrik; 09-02-2014 at 08:59 AM.
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Old 09-02-2014, 09:57 PM   #2
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Quote:
Originally Posted by shaifrik View Post
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
You need to switch to SUB.
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Old 09-16-2014, 02:44 PM   #3
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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
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Old 09-16-2014, 02:50 PM   #4
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OEM oil pump?
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Old 09-16-2014, 02:54 PM   #5
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OEM oil pump?
Yes
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Old 09-16-2014, 02:57 PM   #6
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Quote:
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Yes
You will need a Boundary Engineering oil pump if you want to rev that high and have the oil pump survive any amount of time.
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Old 09-16-2014, 02:59 PM   #7
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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.
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Old 09-16-2014, 03:27 PM   #8
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Like this?

http://www.toda-racing.co.jp/en/product/other/b6-oilpump.html
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Old 09-16-2014, 03:35 PM   #9
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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.
I can work with stoke camshaft but i wont to improve the top end.
My gol is power stable to 7800 and after the power down until 8300rpm
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Old 09-16-2014, 04:15 PM   #10
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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.
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Old 09-16-2014, 07:41 PM   #11
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you need billet oil pump if you rev that high.
that should be your #1 concern, like these guys are telling you
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Old 09-16-2014, 07:54 PM   #12
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Also ATI harmonic ballancer. Especially if you plan on making power that high for an extended period of time.
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Old 09-16-2014, 07:59 PM   #13
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I'm surprised he hasn't blown the engine with stock pump and 370whp already
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Old 09-17-2014, 03:37 AM   #14
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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.
ok the recommend take the high flow pump but this pump have pressure from 66 psi to 91 psi.

who much oil pressure the engine able carry?

thanks
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Old 09-17-2014, 06:07 AM   #15
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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
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Old 09-17-2014, 11:04 AM   #16
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Ask your engine builder, I think the pressure you want depends on your bearing clearances.
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Old 09-17-2014, 01:05 PM   #17
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10 psi per 1000rpm is a good rule if thumb
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Old 09-17-2014, 03:54 PM   #18
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Ask your engine builder, I think the pressure you want depends on your bearing clearances.
What abut the oil seal?
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Old 12-05-2014, 06:07 AM   #19
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the kelford has arrive
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