4.3 TVR Power speed 6

[chris watton]

WolfyJones said:

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

According to the above cats rob 50Bhp,

So - the best compromise, if one wanted to take full advantage of the TVR Power 4.3 upgrade would to have sports cats (around £1k for both)? I cannot stand the noise the de-cats make, coupled with the fact the car wouldn't pass an MOT.

I have emailed Racing green, asking how much their manifold and sports cat package is - no doubt I'll be shocked at the price...

ETA - I added a Janspeed 4-2-1 manifold and sports cat, ITG Maxogen air filter and a Piper VVC exhaust cam to my wife's car - all that equated to an extra 10bhp and extra 10nm from standard - It is hard to believe that a cat/s would reduce bhp by 50 on a S6! Perhaps if they're totally knackered, maybe?

Edited by chris watton on Thursday 23 January 13:33

[m4tti]

You should go to racing Green before you commit to anything and sample the FFF demonstrator... its is very very good.

[chris watton]

m4tti said:

You should go to racing Green before you commit to anything and sample the FFF demonstrator... its is very very good.

What does FFF stand for, BTW?

Ah - found it - Finger follower free....£5400 for the head..

ETA - No - I have set myself a budget, I will be having the Power 4.3 upgrade, I haven't seen any bad feedback from people who have had this.

As this is by far the biggest expense I will spend on the car, I would like to get this out of the way first. I am just surprised how 'low' some bhp figures are, compared to what I first thought, or was led to believe, so wondered why this was.

I have no interest in chasing huge bhp rainbows (which would be wasted in a Tamora anyway), all I want is to get my car as good as it possibly can be and then enjoy it like I stole it!

Edited by chris watton on Thursday 23 January 13:59

[Don1]

DJR 7 said:

So in a nut shell what's a realistic rear wheel figure for a 4.3 ?
The 1st post shows 370 bhp, I'm assuming that was with a standard air box, exhaust etc.
How much more could you squeeze with an ACT air box, de cat and big bore.
I am looking at having the 4.3 and I'd like to know what to expect

Sir needs to have a look at this Wiki - Modified Speed Six Wiki.

[chris watton]

I would imagine also that choosing the right gear and final drive ratios to suit the engine characteristics can make a huge difference to the car's performance.

[RedSpike66]

Don1 said:

My Sag was a strong, good engine at 360 odd - RedSpikes is about the same as well. I have NEVER seen a standard engine over 390, let alone 400.

Yep, I think the Sags and Tuscan2S have produced the most reliable figures as standard.. Seen a few at SRR produce 360-370... TVR catalogues readers were simply being hoodwinked into thinking their car would ever make 380 let alone 405 !!!!

My best figure 369bhp comes after custom re-mapping purely for power and de-catting. If (when) I go for an upgrade, I would be thoroughly disappointed if I didn't get 400 genuine horses from a 4.3 and 430 from a 4.5, although I appreciate its the torque that will make the most difference in everyday enjoyment... An extra 50-60 or more lbs/ft from 3000rpm.... Yum Yum :-)

[chris watton]

RedSpike66 said:

TVR catalogues readers were simply being hoodwinked into thinking their car would ever make 380 let alone 405 !!!!

I agree. however, at the same time, engine rebuilders shouldn't tell prospective customers that after the upgrades, their engines will have 420bhp, should they, when the 'real' figure seem to be around 360 at the fly, and NOT at the wheels.

So in essence, a modest increase in bhp (10-15 perhaps) but a healthier increase in torque is a more realistic expectation from a 3.6-4.3 upgrade? (and of course, a more bullet-proof engine coupled with the warranty)

I guess the perfect set up would be this:
http://www.thetvrshop.com/ProductsDetail.asp?PartN... RG FFF ASY&ProductCategory=c|k|

together with the TVR Power bottom end rebuild....

Edited by chris watton on Thursday 23 January 15:43

[dpd3047]

When stroking an engine as is the 4.3 with out changing anything else you will find you will gain more torque than BHP.Just as a point of note looking at the 3.6 engine it is making approx 93 BHP Per Litre the 4.0 is making 86 BHP per litre so you can see the 3.6 performs better. another point the 4.0 litre is a stroked 3.6
and the power gains for 400 cc are 10 BHP and 25 FT LBS Torque.?

[DJR 7]

Don1 said:

DJR 7 said:

So in a nut shell what's a realistic rear wheel figure for a 4.3 ?
The 1st post shows 370 bhp, I'm assuming that was with a standard air box, exhaust etc.
How much more could you squeeze with an ACT air box, de cat and big bore.
I am looking at having the 4.3 and I'd like to know what to expect

Sir needs to have a look at this Wiki - Modified Speed Six Wiki.

Thank you, interesting read

[Tvr Power]

DJR 7 said:

Don1 said:

DJR 7 said:

So in a nut shell what's a realistic rear wheel figure for a 4.3 ?
The 1st post shows 370 bhp, I'm assuming that was with a standard air box, exhaust etc.
How much more could you squeeze with an ACT air box, de cat and big bore.
I am looking at having the 4.3 and I'd like to know what to expect

Sir needs to have a look at this Wiki - Modified Speed Six Wiki.

Thank you, interesting read

This sometime gets rather laborious do you all really think I would build a 4.3 engine that makes less hp than 4ltr red rose . come on fellas give me some credit , all the figures your see and you read from our rolling road are true irrespective to what other tuners state.. So in a nut shell our hp figures are at the wheels !

Dom

[Tvr Power]

dpd3047 said:

When stroking an engine as is the 4.3 with out changing anything else you will find you will gain more torque than BHP.Just as a point of note looking at the 3.6 engine it is making approx 93 BHP Per Litre the 4.0 is making 86 BHP per litre so you can see the 3.6 performs better. another point the 4.0 litre is a stroked 3.6
and the power gains for 400 cc are 10 BHP and 25 FT LBS Torque.?

"Looking no good Dave " Prove your product and reliability on the track then people may take you serious or maybe not

dom

[chris watton]

Tvr Power said:

This sometime gets rather laborious do you all really think I would build a 4.3 engine that makes less hp than 4ltr red rose . come on fellas give me some credit , all the figures your see and you read from our rolling road are true irrespective to what other tuners state.. So in a nut shell our hp figures are at the wheels !

Dom

Hope so - the 4.3 will be the proverbial icing on the cake for my Tamora and it was reading about these upgrades and warranties that convinced me to get another Tam, instead of a Cobra or Z4M.

[Tvr Power]

chris watton said:

Tvr Power said:

This sometime gets rather laborious do you all really think I would build a 4.3 engine that makes less hp than 4ltr red rose . come on fellas give me some credit , all the figures your see and you read from our rolling road are true irrespective to what other tuners state.. So in a nut shell our hp figures are at the wheels !

Dom

Hope so - the 4.3 will be the proverbial icing on the cake for my Tamora and it was reading about these upgrades and warranties that convinced me to get another Tam, instead of a Cobra or Z4M.

No hope so at Power ! What I say is what's on the Tin

[WolfyJones]

Tvr Power said:

This sometime gets rather laborious do you all really think I would build a 4.3 engine that makes less hp than 4ltr red rose . come on fellas give me some credit , all the figures your see and you read from our rolling road are true irrespective to what other tuners state.. So in a nut shell our hp figures are at the wheels !

Dom

Would be interesting to hear your views on this Dom,

Ryan Griffiths said

Basically Charlie said what ever it makes at the wheels on the Dynojets like TVR Power is the same as the Flywheel power on a Dyno dynamics like SRR. So on the first run at SRR it made 363bhp nearly identical to the 362bhp at Powers.

And are Glow Worms Bhp RR figures poor because of Cats? And could removing the cats give him a extra 50 Bhp?

[m4tti]

Tvr Power said:

This sometime gets rather laborious do you all really think I would build a 4.3 engine that makes less hp than 4ltr red rose . come on fellas give me some credit , all the figures your see and you read from our rolling road are true irrespective to what other tuners state.. So in a nut shell our hp figures are at the wheels !

Dom

Hi Dom
I think the confusion maybe down to the website. The dynochart on the 4.3 upgrade page seems to be showing 322bhp on one curve and 294bhp on a comparison curve. The page states the 4.3 made 370 bhp. The only way to derive that from the graph is to assume the 322 is a wheel figure, where the 370 is 322 +15%. So the page literature and dyno graph don't seem to tie up.

[DJR 7]

Tvr Power said:

DJR 7 said:

Don1 said:

DJR 7 said:

So in a nut shell what's a realistic rear wheel figure for a 4.3 ?
The 1st post shows 370 bhp, I'm assuming that was with a standard air box, exhaust etc.
How much more could you squeeze with an ACT air box, de cat and big bore.
I am looking at having the 4.3 and I'd like to know what to expect

Sir needs to have a look at this Wiki - Modified Speed Six Wiki.

Thank you, interesting read

This sometime gets rather laborious do you all really think I would build a 4.3 engine that makes less hp than 4ltr red rose . come on fellas give me some credit , all the figures your see and you read from our rolling road are true irrespective to what other tuners state.. So in a nut shell our hp figures are at the wheels !

Dom

Dom I've never met you and not sure what's rattled your cage!
I've not suggested in any of my comments that you produce anything other than you claim.
I'm not a customer of yours and therefore unable to quote or speculate as to your claims or abilities.
All I'm trying to establish is true figures obtained by folk that have had 4.3 upgrades.

Darren

[dpd3047]

Tvr Power said:

"Looking no good Dave " Prove your product and reliability on the track then people may take you serious or maybe not

dom

I Stick by my comments and the facts, if read what i said instead of jumping to conlusions, ive not said anthing about reliabilty or have said anything about your BHP figures.

[gacksen]

DJR 7 said:

All I'm trying to establish is true figures obtained by folk that have had 4.3 upgrades.

Darren

havent seen any idependent figures either..... let´s say stock Tamora or T350 with 4.3 engine std. exhaust system and cats.....

only thing that had been seen is the modded stuff with gucci airbox decat big bore exhaust etc. etc... question is what will i get for 7K pounds plus topping with a fully standard car ?

this discussion is not based on reliability of the engines.....

Edited by gacksen on Thursday 23 January 19:18

[Don1]

Tvr Power said:

DJR 7 said:

Don1 said:

DJR 7 said:

So in a nut shell what's a realistic rear wheel figure for a 4.3 ?
The 1st post shows 370 bhp, I'm assuming that was with a standard air box, exhaust etc.
How much more could you squeeze with an ACT air box, de cat and big bore.
I am looking at having the 4.3 and I'd like to know what to expect

Sir needs to have a look at this Wiki - Modified Speed Six Wiki.

Thank you, interesting read

This sometime gets rather laborious do you all really think I would build a 4.3 engine that makes less hp than 4ltr red rose . come on fellas give me some credit , all the figures your see and you read from our rolling road are true irrespective to what other tuners state.. So in a nut shell our hp figures are at the wheels !

Dom

Dom, I can't imagine that you are saying that the TVR figures are honest and correct from the factory - we all know a good 4 litre is around the 360-370 bhp area. All the 4.3 in this list are over 410bhp.

I'd say that's a good return on money spent.

As for the rolling road / dyno lottery.... Sorry, that just doesn't wash. Getsis's car ran on your dyno and SRR one day apart, and the run was 1bhp difference. That sort of thing isn't luck. Besides, as we all know, it's not just about numbers.

[Tvr Power]

DJR 7 said:

Tvr Power said:

DJR 7 said:

Don1 said:

DJR 7 said:

So in a nut shell what's a realistic rear wheel figure for a 4.3 ?
The 1st post shows 370 bhp, I'm assuming that was with a standard air box, exhaust etc.
How much more could you squeeze with an ACT air box, de cat and big bore.
I am looking at having the 4.3 and I'd like to know what to expect

Sir needs to have a look at this Wiki - Modified Speed Six Wiki.

Thank you, interesting read

This sometime gets rather laborious do you all really think I would build a 4.3 engine that makes less hp than 4ltr red rose . come on fellas give me some credit , all the figures your see and you read from our rolling road are true irrespective to what other tuners state.. So in a nut shell our hp figures are at the wheels !

Dom

Dom I've never met you and not sure what's rattled your cage!
I've not suggested in any of my comments that you produce anything other than you claim.
I'm not a customer of yours and therefore unable to quote or speculate as to your claims or abilities.
All I'm trying to establish is true figures obtained by folk that have had 4.3 upgrades.

Darren

Darren no offence taken , all I can say is stick with one engine builder & one Dyno tuner , start with a before and after rebuild there's your Hp increases... It's a free world take your pick

Dom