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tips, technology, tools and techniques related to vehicle driveline components

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roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap
Posted by: roverman
Date: March 04, 2010 11:11AM

Nic and clan. Initial build, I envision (2), "L" shaped pcs., profiled to interlock around peripery of deck. No increase of deck and minimal deck machining,(it's weak enough already) ! No monster crank, therefore no need to add deck height. Motor will be wide-enough , with-out. Probably the Rover, flanged, replacement liners. My stg. II Buick heads ,"want" the tractor sleeves.roverman.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap/Zeus anybody ?
Posted by: roverman
Date: March 25, 2010 07:59PM

Nic and clan, peripheral deck adapter plate will be machined flush, with minimum clean-up of Rover decks. I now have potential to buy (2)" Zeus", raw cast heads. I need to talk with anyone that has worked on same,(especially flow bench types).It's decision making time for me. Thanks, roverman.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap/Ecotech ?
Posted by: roverman
Date: March 31, 2010 12:10AM

Like I need another tangent. "Richard", of WCRCH, claims the ported version flows 425 cfm.! Anybody got bore spacing for same? What if it's 4.25" ? Way wicked Rover ? roverman.
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roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/ 317 cfm./Rover V8 head swap
Posted by: roverman
Date: April 03, 2010 01:27PM

How much can a Rover crank stand anyway? I think "somebody" posted a ("400" hp.shot), was workin ? roverman.


phongshader
Justin Brown
Ca
(63 posts)

Registered:
02/19/2010 04:03PM

Main British Car:
Locost Lotus 7 2.3 Duratec

authors avatar
Re: Lotus 907/Rover V8 head swap
Posted by: phongshader
Date: September 02, 2010 07:44PM

is anything happening here or was it too much work to make it worth while?


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap? Ask FRED
Posted by: roverman
Date: September 02, 2010 07:53PM

Handle here is "DiDueColpi". Fred alluded to having done the impossible. No pictures or dyno report, as of yet, but we are "hopeful". Fred ??


DiDueColpi
Fred Key
West coast - Canada
(1365 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: Lotus 907/Rover V8 head swap
Posted by: DiDueColpi
Date: September 03, 2010 04:09AM

The heads are on the engine and all the cam drives work. The intake looks like it means business, just stalled out on the crank/ cam issue. Home maintenance, trip to Spain and building an ITS Acura and a Soverin Volvo are kinda eating up all the spare time.
Did I mention that I just bought a 82 TR8 in a basket and the clutch is starting to slip on the Esprit?
Cheers
Fred



joe_padavano
Joseph Padavano
Northern Virginia
(157 posts)

Registered:
02/15/2010 03:49PM

Main British Car:
1962 F-85 Deluxe wagon 215 Olds

Re: Lotus 907/Rover V8 head swap
Posted by: joe_padavano
Date: September 03, 2010 04:39PM

I've been following this thread for a while now, and it's certainly a cool idea, but at the risk of being a heretic, why not just get a Northstar and eliminate all the problems?


mgb260
Jim Nichols
Sequim,WA
(2463 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Lotus 907/Rover V8 head swap
Posted by: mgb260
Date: September 03, 2010 08:11PM

I think people here don't want the easy way, but like to make it their own way.That is most of the fun in it. Plus scrounging for unobtanium parts and adapting and making your own parts. Also what if the factory did this or that.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap
Posted by: roverman
Date: September 04, 2010 12:05PM

Well put Jim. If we wanted "easy", we'd all build sbc's . That "antique" Lotus 907 head ,makes 257 hp,2.3L gas/carbs, all motor, in road racing. Two comparably prepped, on a Rover, should make for lead-dog status.


phongshader
Justin Brown
Ca
(63 posts)

Registered:
02/19/2010 04:03PM

Main British Car:
Locost Lotus 7 2.3 Duratec

authors avatar
Re: Lotus 907/Rover V8 head swap
Posted by: phongshader
Date: August 29, 2012 04:37PM

Has anything happened with this? Any pictures of the progress?
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roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap
Posted by: roverman
Date: August 29, 2012 06:51PM

Justin, Fred Key has the gauntlet, on this one. You might "pm" him. Cheers, roverman.


chimes
david chimes
Reading, UK
(12 posts)

Registered:
12/13/2009 08:40AM

Main British Car:
JaguarXJ8 & XK8 Original GT V8 (just s 2ltr

Re: Lotus 907/Rover V8 head swap
Posted by: chimes
Date: September 08, 2012 02:43AM

Why bother, other than the engineering challenge. Drop in a Jaguar AJ8, quad cam, 32 valve 4 ltr, 290bhp/290 torque out of the box. Plenty of them at the breakers!


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap
Posted by: roverman
Date: September 08, 2012 03:48PM

David and clan, "We don't do this because it's easy, we do it bcause it's hard". Modifying our lbc's is not easy. Many new cars can be bought with ample features, performance, etc. Why bother, indeed ? For better or worse, "some" like the idea of an RV8 based swap. Maybe because of Costello or the factory GT's. We seem to be a close knit group, of strongly independant taste. Cheers, roverman.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap
Posted by: roverman
Date: May 27, 2014 03:07PM

WOW, Sept. 2012, how time flies... I consider making (4) modular cams, more of a challenge, than adapting the 907's, to the RV8.. Time will tell. Cheers, roverman.



roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap update
Posted by: roverman
Date: May 29, 2014 12:27PM

I had the good fortune to meet Pete Aardema, last night. Pete and his associate, are top notch, head swappers ! Like 4 valve Porshe heads on a BBC, or Subaru heads, on a Model A block,etc,etc. Pete and crew have been successful at Bonneville, for over 10 years. We discussed at length, the methods of making Lotus 907 heads, work on a Rover. He doesn't think I need a lobotamy, and at least for now, I'll take his word for it. I'll "try" to post pic's, when possible. Onward, roverman.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap, Update
Posted by: roverman
Date: June 09, 2014 07:11PM

Modular cams are progressing well. Big question is, "how crooked", after heat treat.Heat treater say's .002" TIR, is not possible. I may need to grind cam journal areas down to 25 mm, for accurate surfaces, suitable for needle bearing support. Plan is to use Honda B16, adjustable cam sprockets,(round tooth).


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Lotus 907/Rover V8 head swap, update 6/11
Posted by: roverman
Date: June 11, 2014 06:40PM

(4) 907 cams weigh 30.24 lbs. ! I think modular should be 40% less ? Honda B16 sprockets should work by step-turning the 1" spine to 22mm. Next test is to "cryo-split" the 1" needle bearings,(3 center cam journals). Cheers, roverman.


MGBV8
Carl Floyd
Kingsport, TN
(4512 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Lotus 907/Rover V8 head swap
Posted by: MGBV8
Date: September 03, 2014 12:34PM

Looks like some one else is playing the Lotus head game.

[www.speedhunters.com]
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BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Lotus 907/Rover V8 head swap
Posted by: BlownMGB-V8
Date: September 03, 2014 01:26PM

Appears to be well financed at least.

Jim
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