MSM cams in VVT Head?
I was planning on building my MSM motor but found a great deal on an 01' motor with VVT that I will be purchasing. I want to know if there is any reason the MSM cams would not work in a VVT motor if I swapped them over since they are slightly more aggressive from my understanding. Would this swap offer the benefits I am expecting?
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Interesting question.
I know for sure that VVT intake cam has a nub on the end for the CAM sensor, which is no other cams have. You can probably work around that. I'm not aware of any other reason why they wouldn't fit, but its possible that the VVT actuator has something to do with it. https://www.miataturbo.net/attachmen...ine=1376498551 edit: yeah the VVT intake cam has screw holes for actuator mounting on it and sticks out a lot further. http://abefm.smugmug.com/photos/394228250_zNi4Y-XL.jpg More pictures: https://www.miataturbo.net/engine-pe...84/#post319719 |
I actually only think the exhaust cam on the MSM is more aggressive so I don't think that is a big deal.
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Originally Posted by soviet
(Post 1043511)
Interesting question.
I know for sure that VVT intake cam has a nub on the end for the CAM sensor, which is no other cams have. You can probably work around that. I'm not aware of any other reason why they wouldn't fit, but its possible that the VVT actuator has something to do with it. https://www.miataturbo.net/attachmen...ine=1376498551 edit: yeah the VVT intake cam has screw holes for actuator mounting on it and sticks out a lot further. http://abefm.smugmug.com/photos/394228250_zNi4Y-XL.jpg More pictures: https://www.miataturbo.net/engine-pe...84/#post319719 |
So I read that thread you linked soviet and I saw a whole lot of speculation but did not see any actual tested results. It is also incredibly old and I assume that someone has tried this in the past 5 years. I was thinking Savington or Emilio would have done this or atleast figured out if it would work.
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Very intersting question indeed.
I'm hoping someone has good info on this. (or you try it and report back :) ) |
Originally Posted by Ryan_G
(Post 1043512)
I actually only think the exhaust cam on the MSM is more aggressive so I don't think that is a big deal.
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If I get no answer and it fits the motor with no problems I will be more than happy to dyno test this thing.
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Exhaust cams are identical for all 99-05 motors including the MSM AFAIK.
VVT intake cams are unique and cannot be interchanged with BP4W or BP5A cams. The #1 journal has a significantly larger diameter. |
Thank you for the response Savington. That is just the info I needed.
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Originally Posted by Ryan_G
(Post 1043507)
Would this swap offer the benefits I am expecting?
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Originally Posted by Braineack
(Post 1043568)
by removing the cam sensor and VVT abilities? I wouldn't call those benefits.
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He should swap in a 1.6L and buy a B6T turbo manifold.
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Originally Posted by Braineack
(Post 1043592)
He should swap in a 1.6L and buy a B6T turbo manifold.
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Originally Posted by Savington
(Post 1043606)
I hear they're all over the junkyards :rofl:
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you missed the joke:
Is it possible to get a miata 1994 stock to 200hp with only $3,000? - MX-5 Miata Forum 20g's. |
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