[Rovernet] 3.5 to 3.9?

[Dermot Harvey]

Yes, you’re right about the breathing. Sure, a twin plenum would be nice - where did you see it?
If you want to run without cats you could use the English exhaust system, or at least the downpipes which give you some extraction. I used a plenum from an early fuel injected Range Rover - I got it used in England I think at the SD1 club spares day.
I still have a lot of new SD1 parts plus 2 parts cars.

Dermot Harvey
 Spectral Kinetics

> On Mar 7, 2016, at 3:41 PM, GeffMcCarthy via Rovernet <rovernet at rovernet.org> wrote:
> 
> Thanks, Dermot.  I also have read that the SD1 breathing is restricted
> severely.  A Vitesse twin plenum was advertised a few months back, and sold
> for £800!  I plan to investigate throttle body injection on an Edelbrock
> manifold, or similar. 
> 
> 
> 
> AvMedSafe
> 
> Geoffrey W. McCarthy MD MBA DipAvMed
> 
> 677 NW Melinda Ave Portland OR USA 97210
> 
> 503-241-8468(h) 503-799-3809 (mobile)
> 
> 
> 
> -----Original Message-----
> From: Rovernet [mailto:rovernet-bounces at rovernet.org] On Behalf Of Dermot
> Harvey via Rovernet
> Sent: Monday, March 07, 2016 10:59 AM
> To: Rovernet <rovernet at rovernet.org>
> Cc: Dermot Harvey <roverman2 at verizon.net>
> Subject: Re: [Rovernet] 3.5 to 3.9?
> 
> 
> 
> Hi Geoffrey,
> 
> 
> 
> I think you would be better off with one of the larger iterations of the
> Rover V8. such as the 3.9 or 4.2 Liter.  I have both engines used in stock
> if you are interested.
> 
> Alternately, you could have your present motor upgraded in power by using
> higher compression pistons, a more radical camshaft and improvements to your
> Fuel Injection mapping. This is what I did with my SD1 when I rebuilt the
> motor some years ago. The car is now no slouch and is an excellent Grand
> Touring car for fast longer journeys. Still prefer my 1971 2000TC for
> running around the County.
> 
> 
> 
> Best,
> 
> 
> 
> Dermot Harvey
> 
> Spectral Kinetics
> 
> 
> 
> 
> 
> 
> 
>> On Feb 29, 2016, at 6:46 PM, Brian Thornhill via Rovernet <
> <mailto:rovernet at rovernet.org> rovernet at rovernet.org> wrote:
> 
>> 
> 
>> Being a Land Rover tech for 17 years and working with these motors for
> many years I am not a fan of boring them as you tend to break the seal loose
> between the sleeve and the block I have sourced a few good 3.9 and 4.6
> blocks for guys with TR8's they work well if you ant to stay with that block
> contact The Wedge Shop they can help you.
> 
>> 
> 
>> Please excuse errors and format this email sent from iPhone
> 
>> 
> 
>> 
> 
>>> On Feb 29, 2016, at 3:21 PM, GeffMcCarthy via Rovernet <
> <mailto:rovernet at rovernet.org> rovernet at rovernet.org> wrote:
> 
>>> 
> 
>>> I am still looking for more thrust for my 1970 3500S and 1980SD1.  Is 
> 
>>> it feasible, and reasonably priced, to bore the 3.5 to the 3.9? I 
> 
>>> understand the crankshaft remains the same.
> 
>>> 
> 
>>> 
> 
>>> 
> 
>>> AvMedSafe
> 
>>> 
> 
>>> Geoffrey W. McCarthy MD MBA DipAvMed
> 
>>> 
> 
>>> 677 NW Melinda Ave Portland OR USA 97210
> 
>>> 
> 
>>> 503-241-8468(h) 503-799-3809 (mobile)
> 
>>> 
> 
>>> 
> 
>>> 
> 
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