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vjj

Original Poster:

569 posts

126 months

[news] 
Sunday 20th May 2012 quote quote all
Hi Guys,

Just to clear up a long-term argument The Overfinch Discovery was in fact NOT a myth - I have just bought one of these rare beasties(only 3 or 4 built), but they are out there.

There is one another for sale at restorationmen in oxfordshire - a 1991 Manual car 350 together with all the stuff you could get on the RR at the time(red instruments etc). This chap was involved with Overfinch during this time and remembers my car. He is asking £25K - see ebay

The car I have bought(together with invoce from Overfinch for 22k) is a stage 2 Conversion based on a 1995 Discovery ES7 Auto

Has the following

Chevy 350 Vortec(LT31 Engine) with hi-flow headers, beefed-up gearbox, brakes, suspension and quick steering, stainless exhaust system and a few cosmetic things(spare wheel cover, badges, etc) - the interior was left stock as it was very nice anyhow.

Originally on Injection but now running a big Holley with Edelbrock inlets

The car is a bit tatty but very solid, and as the original ECU Land Rover was left in situ I am going to replace the engine and box with standard items from the time and sell it on.

The 350 motor, uprated gearbox(refurbished at Ashcroft 1000 miles ago- bonus!) and all the adaptors etc will be going into my Defender(current TVR RV8 getting a bit tired). As she be a 1984 there are no cats to worry about so free-flowing exhaust can be fabricated. Planning to swap the chevy heads for aluminium big-valves and fit a high-torque cam to suit.

As my defender is a cabrio and only weighs 1300kg (1400 with the chevy in) she should be quite lively!!!

Will keep ypou posted as the project develops.

this car


will have this engine see myrecent topic post in Yank Cars -chevy 350 starter motor nightmare

vjj

Original Poster:

569 posts

126 months

[news] 
Sunday 20th May 2012 quote quote all
here is the disco engine bay

LukeSi

5,319 posts

48 months

[news] 
Sunday 20th May 2012 quote quote all
erm, pretty sure that is a defender.

vjj

Original Poster:

569 posts

126 months

[news] 
Sunday 20th May 2012 quote quote all
read the post again - I said my defender will(above picture) be having the running gear from the disco(engine bay pictured below)

Manicminer

3,549 posts

84 months

[news] 
Sunday 20th May 2012 quote quote all
LukeSi said:
erm, pretty sure that is a defender.
Erm, try reading his post properly!

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LukeSi

5,319 posts

48 months

[news] 
Sunday 20th May 2012 quote quote all
Ah yes I do seem to have been a muppet.

Any pictures of the disco?

vjj

Original Poster:

569 posts

126 months

[news] 
Sunday 20th May 2012 quote quote all
to follow shortly

A.J.M

4,954 posts

73 months

[news] 
Sunday 20th May 2012 quote quote all
So, your destroying in a way, a very rare example of a car.
To make another one a bit faster. I like the idea but it seems a waste of the disco to remove the engine that made it special and unique in the first place.

Trommel

12,341 posts

146 months

[news] 
Sunday 20th May 2012 quote quote all
vjj said:
Just to clear up a long-term argument The Overfinch Discovery was in fact NOT a myth - I have just bought one of these rare beasties(only 3 or 4 built)
Two have been up for sale recently, I'm sure more than three or four were converted.

eliot

6,038 posts

141 months

[news] 
Monday 21st May 2012 quote quote all
Sticking a turbo on a 5.7 makes for interesting performance.

vjj

Original Poster:

569 posts

126 months

[news] 
Monday 21st May 2012 quote quote all
A.J.M said:
So, your destroying in a way, a very rare example of a car.
To make another one a bit faster. I like the idea but it seems a waste of the disco to remove the engine that made it special and unique in the first place.
The money I would need to spend on the disco to make it fast enough for me(stroking the engine to 383 CI, aftermarket injection etc), plus about 6 grand on cosmetics to get it back up to scratch(respray, re-trim, other repairs) would add up to a lot more than the car would ever be worth.

By putting the running gear into my defender(new chassis, cosmetically excellent) I am at least getting the performance I require at a reasonable cost in an interesting vehicle.

bakerstreet

1,962 posts

52 months

[news] 
Monday 21st May 2012 quote quote all
vjj said:
The money I would need to spend on the disco to make it fast enough for me(stroking the engine to 383 CI, aftermarket injection etc), plus about 6 grand on cosmetics to get it back up to scratch(respray, re-trim, other repairs) would add up to a lot more than the car would ever be worth.
Spending more money on a car than what its worth is fairly common!

I'm sure someone who be niterested ina car with such low production numbers, especially if its restored to factory condition.

Even someone like Dunsfold might be interested in it!

eliot

6,038 posts

141 months

[news] 
Monday 21st May 2012 quote quote all
I picked up L31 vortec engine and box very cheaply years ago. Fairly unremarkable engine and not all that powerful (255 bhp). They are externally balanced and have different inlet manifolds - so not exactly a cherished or sought after engine. I got it running standalone on the factory ECU one afternoon for a giggle.
http://www.mez.co.uk/vortec5700.html

vjj

Original Poster:

569 posts

126 months

[news] 
Monday 21st May 2012 quote quote all
eliot said:
I picked up L31 vortec engine and box very cheaply years ago. Fairly unremarkable engine and not all that powerful (255 bhp). They are externally balanced and have different inlet manifolds - so not exactly a cherished or sought after engine. I got it running standalone on the factory ECU one afternoon for a giggle.
http://www.mez.co.uk/vortec5700.html
Hi Elliot - I have had your MEZ pages bookmarked for a long time and have found them very very useful in maintaining my TVR engine - THANKS

After many phone-calls and emails I have finally ascertained that my engine is NOT an L31 Vortec but a very late L05! Many thanks Brian at Roadcraft in Lancing

Turns out one of the heads has a small crack in it.

The bottom end seems fine and I have today been and bought some Edelbrock E-street big-valve aluminium heads, gaskets, and everything else for a full top-end rebuild - just waiting to confirm whether the cam has roller-lifters or the flat-tops.

If they are rollers I have been advised to leave well alone as they hardly wear at all, and if they are flats then a new hi-torque cam will be installed - will be matching the inlet/outlet ports (have large-bore free-flow headers and ported edelbrock inlet already) and making sure the big holley is spot on. All i will needd now is strengthened pushrods and maybe some rockers.

Should be around the 300bhp mark and maybe 375 lbs of torque.

vjj

Original Poster:

569 posts

126 months

[news] 
Tuesday 26th June 2012 quote quote all
Update for you guys if anyone is interested.

Finally ascertained that the engine is in fact an L98 Camaro/Corvette engine that stopped being fitted to new cars in 1986 - it was superseded by the LS1

Ho

Edited by vjj on Wednesday 19th September 22:17

100SRV

964 posts

129 months

[news] 
Tuesday 26th June 2012 quote quote all
An interesting project, I briefly considered alternative powertrains for my Bowler earlier this year when the engine was sick (3.9 EFI Rover V8) but decided it was wiser to repair than go silly with Ford V8 power and the resultant modifications.

I really like the 2-door Range Rover Overfinch with the Schuler FF transmission, I didn't know that they modified Discovery too.

vjj said:
Hi Guys,
As my defender is a cabrio and only weighs 1300kg (1400 with the chevy in) she should be quite lively!!!
I think you have underestimated the kerb mass of a soft-top Ninety though - closer to 1695kg
Source is http://www.cuddles.abelgratis.net/landrover.htm
also
Land Rover quote: "Minimum weight of vehicle in running order* 1,740kg"

100SRV



vjj

Original Poster:

569 posts

126 months

[news] 
Wednesday 27th June 2012 quote quote all
With regards to the weight of my defender - I was going on what the previous owner told me

The link you gave me is for diesels - I shall be finding out though. Very useful

I suspect the kerb weight with the chevy in will be around the 1750 mark.


eliot

6,038 posts

141 months

[news] 
Wednesday 27th June 2012 quote quote all
My dakar with the chebby in it came in at 1800 kilos.

100SRV

964 posts

129 months

[news] 
Wednesday 27th June 2012 quote quote all
eliot said:
My dakar with the chebby in it came in at 1800 kilos.
Is that with ballast too or the basic Dakar structure?

C Lee Farquar

1,163 posts

103 months

[news] 
Wednesday 27th June 2012 quote quote all
100SRV said:
I really like the 2-door Range Rover Overfinch with the Schuler FF transmission
I have one of those transfer boxes mated to what I think is a 700 R4. It came with an L98 small block and Corvette heads. I haven't dared put it in anything as I assume the parts are all obsolete. It's also very long.
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