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-   -   vvt head question (https://www.miataturbo.net/engine-performance-56/vvt-head-question-76848/)

guttedmiata 01-03-2014 07:36 PM

vvt head question
 
Ok so I don't know if I'm not searching the correct terms, phrases, words, etc. but I can't seem to find the answer to my question.

Can I use a 2001-2005 VVT head for a NON-VVT application by just replacing the cams?
For example, could I take a 2005 head and slap some '99 cams in it and go?

18psi 01-03-2014 08:32 PM

nope

guttedmiata 01-03-2014 08:49 PM


Originally Posted by 18psi (Post 1088310)
nope

Well I guess that's my answer and the "why" doesn't change anything, but does someone have a little more comprehensive answer than "nope"?

RussellT94 01-03-2014 08:52 PM

Yep.

18psi 01-03-2014 08:58 PM

3 Attachment(s)

Originally Posted by guttedmiata (Post 1088312)
Well I guess that's my answer and the "why" doesn't change anything, but does someone have a little more comprehensive answer than "nope"?

intake cams
https://www.miataturbo.net/attachmen...ine=1388800681
https://www.miataturbo.net/attachmen...ine=1388800681
find waldo

Leafy 01-03-2014 09:17 PM

I'm quite confused why you wouldnt just use a 99-00 head to achieve what you want. Its lighter, less complicated, better looking, can fit bigger cams with less work, etc.

Savington 01-03-2014 09:20 PM

Exhaust cam fits. Same exhaust cam from 99-05. Intake cam is completely different and not at all compatible in either direction.

guttedmiata 01-03-2014 09:38 PM


Originally Posted by Leafy (Post 1088328)
I'm quite confused why you wouldnt just use a 99-00 head to achieve what you want. Its lighter, less complicated, better looking, can fit bigger cams with less work, etc.

Availability.

guttedmiata 01-03-2014 09:39 PM

Thanks for a little more info guys. Now I know why everyone wants stupid money for a 99/00 head. Supply and demand.

18psi 01-03-2014 09:48 PM

There's that reason and there's:
1) too cheap to shell out for vvt control
2) too lazy to switch to vvt control
3) want to run serious cams

Because otherwise, the vvt head is better in every single way.

guttedmiata 01-03-2014 10:02 PM

I'll take door number 3

Leafy 01-03-2014 10:04 PM


Originally Posted by guttedmiata (Post 1088344)
I'll take door number 3

Bust out the die grinder then.

Savington 01-03-2014 10:21 PM

So grind a cam that has the correct offset and don't use the VVT. I'm not sure why people here insist on propagating bad info like "VVT heads can't run serious cams" or "99-00 heads take bigger cams without work". It's all horseshit.

Leafy 01-03-2014 10:27 PM

But even if you made that cam that fit the VVT head you still need the oil pipe going across the valve cover and and the solenoid to get oil to the first cam journal right? Or can you drill the journal and hit the oil passage that the non-vvt heads use?

18psi 01-03-2014 10:33 PM


Originally Posted by Savington (Post 1088350)
So grind a cam that has the correct offset and don't use the VVT. I'm not sure why people here insist on propagating bad info like "VVT heads can't run serious cams" or "99-00 heads take bigger cams without work". It's all horseshit.

I guess I shoulda said off the shelf.
Though looks like emilio is working on that


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