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32 valve J.H. V8  Rating:  Rating
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 Posted: 11-11-2008 12:14 am
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roverman
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Greetings, anyone out there built or contemplating the build of 907/912 head swap on Rover V8 ? Should make for a testeroadster! I have done the initial mock-up. Bore spacing is exact. Need to move some bolt holes around in the decks, possibly with-out deck adapter plates. Rovers are easy for tranmission choices,I.E  GM.,Tremic, Man's. and GM., Ford C4, Toy-Borg 4spd/OD., Auto's. Will need electronic port injection with cross-ram runnrs for best results. Engine displacements of 4-5L. very practical with 6.31 being astronamical limit. Your constructive critic and or input is appreciated.  Regards, roverman.

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 Posted: 11-11-2008 02:44 am
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Jensen Healey
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Roverman, You are a madman! Welcome!!! I haven't ever looked at a Rover V8 so I can't comment, but will look forward to further analysis of the idea.

We rate difficulty of projects in glasses of vino around here. I think you'll need about a barrel for this one!

Where are you located?

Kurt

JH 13148

 

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 Posted: 11-11-2008 05:21 am
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subwoofer
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Not to be a party pooper here, but have you considered that the flow through the passenger side head will have to be reversed? Mind you, I haven't studied the 907 head up close yet (it's still in the car), so it is quite possible that it is symmetrical, at least the early heads.

Like the idea though, 12 out of 10 on the crazy scale, but it could easily turn into 200 out of 10 on the amount of work scale....

--
Joachim

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 Posted: 11-11-2008 07:23 am
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JHRV8
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Well,I to have done some very general initial measurements, and I came to the conclusion that barring a win at the lottery, this is next to impossible, with the welding and fabrication being a 11 on  the 1 to 10 scale, the reversal of one bank of cams which need to be custom made, the custom intake manifold, and exhaust, etc. ect..  I just don't have the $30,000.oo needed.....Good luck!!! p.s. I do have a Rover V-8 in my J-H.... great fit 225 hp, 285 fp/torque.

Last edited on 11-11-2008 12:59 pm by JHRV8

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 Posted: 11-11-2008 12:37 pm
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Mitch Ware
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Other than the gee-wiz factor, why not just put a built rover V-8 in the car. We are about half way done with building one for an MGB that will be right around 500hp. using a Ford 5 speed and 9" rear end, we should be able to run with the corvettes and vipers on the track no sweat.

Mitch Ware - #19670

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 Posted: 11-11-2008 12:43 pm
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Jensenman
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Much as I like the 'all Brit' factor of the Lotus head on a Rover block setup, I'd have to go with the Lexus 32 valve V8 which came in the LS400.  It's called the 1UZ-FE motor, there are companies in Australia and England which make M/T swap bellhousings and flywheels for them. It makes around 250-260 HP stock and is typically Toyota reliable, meaning the salvage yards despair of ever selling one. This makes them dirt cheap. I may eventually do one of those in my Solo I J-H.

 

EDIT: IIRC the Cadillac Northstar's heads are allegedly based on the 9xx series Lotus units, wonder how hard it would be to plop a pair of J-H heads on a Northstar block?

Last edited on 11-11-2008 06:19 pm by Jensenman

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 Posted: 11-11-2008 04:00 pm
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roverman
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Wow, 500 hp! Wildcat heads? 2xturbo? Magnacharger? Big? Got dyno sheet? You definately got my attention! The bellhousings I'm aware of take GM. pattern trans. I also have early,74, MGB Roadster. I like the mid 80's RX-7 IRS/IFS suspension modules. No mock-up as yet. Perhaps a little British invasion would be good for the corner burners!

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 Posted: 11-11-2008 04:02 pm
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roverman
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consuming good, whining bad. may the farce be with us.......

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 Posted: 11-11-2008 04:04 pm
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roverman
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Head do 180. Work do 360.  or just "Poser a Rover"? u-no JH. valve covers?

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 Posted: 11-11-2008 04:05 pm
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roverman
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also, Inland Empire?, CA.

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 Posted: 11-11-2008 04:07 pm
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roverman
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Maybe we should just sign-up for a test drive with the guy making 500 hp.?? roverman.

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 Posted: 11-11-2008 06:52 pm
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Mitch Ware
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Parts for the rover engine just cleared customs and they are all down at the machine shop with the block. Bore and stroke are being increased making the engine right at 5 liters. We are targeting getting it done for next years racing season. Then we'll see how well it all holds together.

Mitch Ware - #19670

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 Posted: 11-11-2008 07:04 pm
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roverman
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I might be off-here but Norstar should be about 4.36" on bore centers. We need 4.24". IE. 907, B.O.R.V8's and Buick V6's. I prefer "closed deck" blocks for head swaps.  regards, roverman.

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 Posted: 12-22-2008 11:25 am
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normv
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I have seen this done somwhere on the net a few years ago but can't find it now, it should be on there somwhere they were able just to reverse the cam towers on the right head

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 Posted: 12-22-2008 01:53 pm
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smcmanus
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normv wrote: I have seen this done somwhere on the net a few years ago but can't find it now, it should be on there somwhere they were able just to reverse the cam towers on the right head

...or take the right bank exhaust stacks right through the hood!! 

Have a nice day

Steve

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 Posted: 12-22-2008 03:33 pm
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roverman
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Thanks for the reply. Thats just how the mock-up went so many years ago.  Looks like well under $30 k. Might be able to squeez (4) IDA. Webbers on there to speed up the build. Tremic 5/6 speed  with IRS. or T-axel rear. Possible Targa top. Yes I know I'm going to destroy the "collector" value of the car. Fellow Jensenholic, Roverman.

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 Posted: 12-22-2008 05:52 pm
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Chris E
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 I took a quick look at the cam towers on my spare engine & it looks  like they can be reversed with little madification. If you can get the heads to bolt up and get the water flow to work, it should be fairly simple.

 I'd love to see it!

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 Posted: 12-23-2008 04:19 am
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JHRV8
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Ya know that reversing one of the cams is just the begining; you have to make 8 cylinders intermesh and TIME to make the motor run smoothly...... think...

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 Posted: 12-23-2008 03:23 pm
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roverman
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I think I'll reverse 1 head, 2 cams, and give each cylinder 90 deg's of crank to do it's thing. More likely I'll run out of time before motor. Regards, roverman.

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 Posted: 12-24-2008 12:04 pm
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Triplesn8s
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Roverman,

I really don't think this will work.  I looked at it several years ago as I have lots of Rover bits & TR8's and did have a JH and motor spares.  Your post got me to double check myself.

I dug a bit and found a new JH head gasket and laid it on one of my Rover V8 heads.  Absolutely no way.  Bore centers are way off (1/4") and the bolt holes don't intersect at all.  Never in a million years my friend.

If this were doable at all I would have already been working on it for a couple of years as I have a mill.

Sorry,

Bill

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