Whats the difference between the 4.0L Sixes?
Discussion
According to my TVR brochure dated 1st May 2006 S Spec differs by
18" wheels
Close Ratio Gearbox
Gas Discharge Headlights
Air Con
Different areo package
Doesn't go into detailed engine specs but gives mods as
Ported and skimmed head
Bigger injectors
Different cam (Seen suggestions that this my NOT be the case???)
Larger bore exhaust
Different ECU mapping
Output quoted as 380 bhp over 365bhp and
320lb/ft over 290lb/ft
0 to 60 (estimated) 3.7 over 4.2
0 to 100 (estimated) 8.1 over 9.0
Front track 10mm narrower
Front Brake discs 322mm over 304
Rear Brake discs 298mm over 282
Extra cost of £9,987.50
18" wheels
Close Ratio Gearbox
Gas Discharge Headlights
Air Con
Different areo package
Doesn't go into detailed engine specs but gives mods as
Ported and skimmed head
Bigger injectors
Different cam (Seen suggestions that this my NOT be the case???)
Larger bore exhaust
Different ECU mapping
Output quoted as 380 bhp over 365bhp and
320lb/ft over 290lb/ft
0 to 60 (estimated) 3.7 over 4.2
0 to 100 (estimated) 8.1 over 9.0
Front track 10mm narrower
Front Brake discs 322mm over 304
Rear Brake discs 298mm over 282
Extra cost of £9,987.50
Dave (V8GRF), That's the cost of the 'S'(SPORTS) pack option which includes the S engine i.e. the one with RED Head..Personal question Dave (NTEL) ...What colour is yours????
Black Head 3.6 engine
The original advertising for the convertible specified a 3.6 litre option , but I don't think any ever came out with a 3.6 engine, but the stated 0-60 was 4.2 sec and BHP rating was 350 bhp/290lbs/ft.
Black Head 3.6 engine
The original advertising for the convertible specified a 3.6 litre option , but I don't think any ever came out with a 3.6 engine, but the stated 0-60 was 4.2 sec and BHP rating was 350 bhp/290lbs/ft.
Edited by glow worm on Sunday 23 September 21:46
glow worm said:
Dave (V8GRF), That's the cost of the 'S'(SPORTS) pack option which includes the S engine i.e. the one with RED Head..Personal question Dave (NTEL) ...What colour is yours????
Black Head 3.6 engine
The original advertising for the convertible specified a 3.6 litre option , but I don't think any ever came out with a 3.6 engine, but the stated 0-60 was 4.2 sec and BHP rating was 350 bhp/290lbs/ft.
Dont place to much faith in the colour of a cam cover - you could have what you wanted. There were many 3,6 litre Tuscans made. Black Head 3.6 engine
The original advertising for the convertible specified a 3.6 litre option , but I don't think any ever came out with a 3.6 engine, but the stated 0-60 was 4.2 sec and BHP rating was 350 bhp/290lbs/ft.
Edited by glow worm on Sunday 23 September 21:46
Daftlad said:
glow worm said:
Dave (V8GRF), That's the cost of the 'S'(SPORTS) pack option which includes the S engine i.e. the one with RED Head..Personal question Dave (NTEL) ...What colour is yours????
Black Head 3.6 engine
The original advertising for the convertible specified a 3.6 litre option , but I don't think any ever came out with a 3.6 engine, but the stated 0-60 was 4.2 sec and BHP rating was 350 bhp/290lbs/ft.
Dont place to much faith in the colour of a cam cover - you could have what you wanted. There were many 3,6 litre Tuscans made. Black Head 3.6 engine
The original advertising for the convertible specified a 3.6 litre option , but I don't think any ever came out with a 3.6 engine, but the stated 0-60 was 4.2 sec and BHP rating was 350 bhp/290lbs/ft.
Edited by glow worm on Sunday 23 September 21:46
glow worm said:
Personal question Dave (NTEL) ...What colour is yours????
My rocker cover is blue, which denotes a late 4.0L. However it is fitted with "S" / Sag exhaust manifolds which have a 129.5mm dia cat mating flange rather than the standard 126.5mm dia. So goodness knows what it is.glow worm said:
Daftlad said:
glow worm said:
Dave (V8GRF), That's the cost of the 'S'(SPORTS) pack option which includes the S engine i.e. the one with RED Head..Personal question Dave (NTEL) ...What colour is yours????
Black Head 3.6 engine
The original advertising for the convertible specified a 3.6 litre option , but I don't think any ever came out with a 3.6 engine, but the stated 0-60 was 4.2 sec and BHP rating was 350 bhp/290lbs/ft.
Dont place to much faith in the colour of a cam cover - you could have what you wanted. There were many 3,6 litre Tuscans made. Black Head 3.6 engine
The original advertising for the convertible specified a 3.6 litre option , but I don't think any ever came out with a 3.6 engine, but the stated 0-60 was 4.2 sec and BHP rating was 350 bhp/290lbs/ft.
Edited by glow worm on Sunday 23 September 21:46
I've found some info tonight for you Dave,
Different rods,pistons and crankshaft
As you say bigger bore exhaust passed the cats
Different ECU chip
and a few more subtle tuning issues which I can't remember....give Heath a ring if you want the full version.
He did tell me about the 20/30 Blueprint engines that came out some years ago...wish I had one of those...plus another with a special crankshaft which TVR paid £5k alone. So there are some 'S'pecial engines out there as well.
Different rods,pistons and crankshaft
As you say bigger bore exhaust passed the cats
Different ECU chip
and a few more subtle tuning issues which I can't remember....give Heath a ring if you want the full version.
He did tell me about the 20/30 Blueprint engines that came out some years ago...wish I had one of those...plus another with a special crankshaft which TVR paid £5k alone. So there are some 'S'pecial engines out there as well.
glow worm said:
I've found some info tonight for you Dave,
Different rods,pistons and crankshaft
As you say bigger bore exhaust passed the cats
Different ECU chip
and a few more subtle tuning issues which I can't remember....give Heath a ring if you want the full version.
He did tell me about the 20/30 Blueprint engines that came out some years ago...wish I had one of those...plus another with a special crankshaft which TVR paid £5k alone. So there are some 'S'pecial engines out there as well.
theres some information there that is long overdue being in the public domain....maybe Heath could post a few paragraphs....Different rods,pistons and crankshaft
As you say bigger bore exhaust passed the cats
Different ECU chip
and a few more subtle tuning issues which I can't remember....give Heath a ring if you want the full version.
He did tell me about the 20/30 Blueprint engines that came out some years ago...wish I had one of those...plus another with a special crankshaft which TVR paid £5k alone. So there are some 'S'pecial engines out there as well.
Whitey said:
theres some information there that is long overdue being in the public domain....maybe Heath could post a few paragraphs....
You need to book your car into X-WORKS SERVICE in Kirkham where you'll find not just one but two exceptional ex-TVR mechanics 
....They even look after my Beemer which is a bit of a come down from Smellies Lambo for them...Heath won''t comment on here...You could try PMing machinehead on here (if he's still about), I think he was heavily involved on the engine build side.
Edited by glow worm on Thursday 27th September 10:10
glow worm said:
He did tell me about the 20/30 Blueprint engines that came out some years ago...wish I had one of those
Our Tamora (MrsS's) has a factory built blueprinted 4,0. Its a silky smooth gem of an engine and makes the 4,0S engine in my Sag feel like an old rough hound of a thing. 
Poles apart...
Daftlad said:
Our Tamora (MrsS's) has a factory built blueprinted 4,0. Its a silky smooth gem of an engine and makes the 4,0S engine in my Sag feel like an old rough hound of a thing.
Poles apart...
John, How did people get Blueprinted engines??? Was it a chargeable option??? Was it a favour by PW to valued customers?? How much did it cost (If you don't mind sharing the info)??? And how do you know if an engine was a 'blueprint' variant (Is it in the owners handbook??))???Poles apart...
I thought that Tam was special looking at the outside...It's obviously pretty special under the bonnet aswell.!!!
glow worm said:
Daftlad said:
Our Tamora (MrsS's) has a factory built blueprinted 4,0. Its a silky smooth gem of an engine and makes the 4,0S engine in my Sag feel like an old rough hound of a thing.
Poles apart...
John, How did people get Blueprinted engines??? Was it a chargeable option??? Was it a favour by PW to valued customers?? How much did it cost (If you don't mind sharing the info)??? And how do you know if an engine was a 'blueprint' variant (Is it in the owners handbook??))???Poles apart...
I thought that Tam was special looking at the outside...It's obviously pretty special under the bonnet aswell.!!!
There is no external indication that it is a blueprint, and other than the build sheet and how it drives, nothing to suggest its a 4,0 litre.
It is a nice car that Linda keeps suggesting she should sell it as it gets less use than she feels comfortable with.
Blueprinting was also offered to customers lounging in the rebuild queue(and TVR's reception area) on their 2nd or 3rd rebuild as a sweetener. At the time I could never get anything more out them as to what the blueprinting actually entailed and even if it existed or if it was just another phrase the poor sod on the end of the rebuild hotline at the factory made up to amuse himself for the afternoon.
The definition of blueprinting is an engine built to the most exacting specifications of the engine with parts weighed and balanced etc.
Of course you might expect that to be done anyway!
Would love to hear more info on this in relation to TVR if anyone has it.
The definition of blueprinting is an engine built to the most exacting specifications of the engine with parts weighed and balanced etc.
Of course you might expect that to be done anyway!
Would love to hear more info on this in relation to TVR if anyone has it.
NTEL said:
Sorry if this has been asked before, but I could not find it on the search facility.
What is the actual difference between a later standard 4.0L Sp6 and an "S" spec engine?
Is it valve timing, cams, ECU, mapping, compression or a combination of all of them?
Looking at your other posts Dave....What do Track V Road Say??????What is the actual difference between a later standard 4.0L Sp6 and an "S" spec engine?
Is it valve timing, cams, ECU, mapping, compression or a combination of all of them?
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