TVR Power 4.3 here I come - great deal!

[chris watton]

billynobrakes said:

ShiDevil said:

What's the difference? Which Ferodo did you go for?

Carbon Loraine are racing pads and have more metal content so are noisy, I went for Ferodo DS2500

That's what I have, too. Seem to do the job just fine, and no squeaking, just a nice positive feel.

Took the wife out in the Tam today (although I flooded the engine when starting it up...)

There is a resonance from the exhaust at about 3k revs. I told my wife that if I have the big bore system, that will eliminate the noise. (After I took her to the garden centre and then bought her dinner..) She didn't seem against it!

[ShiDevil]

billynobrakes said:

Carbon Loraine are racing pads and have more metal content so are noisy, I went for Ferodo DS2500

Thanks for comments, Is the stopping power much the same as the CL pads are v good. I think I have the RC5+ Pads.

They can squeal a bit. Any other characteristics?

[billynobrakes]

ShiDevil said:

Thanks for comments, Is the stopping power much the same as the CL pads are v good. I think I have the RC5+ Pads.

They can squeal a bit. Any other characteristics?

Stopping power is the same, CL Pads very good by the way, tried everything to stop the squealing, put anti squeal pads on as well but the same, might just have been the that set of pads but I simply could not put up with the squeal even at walking pace

Happy with the Ferodo pads

[PGNCerbera]

billynobrakes said:

Stopping power is the same, CL Pads very good by the way, tried everything to stop the squealing, put anti squeal pads on as well but the same, might just have been the that set of pads but I simply could not put up with the squeal even at walking pace

Happy with the Ferodo pads

I'd echo this. I have got a full set of both Ferrodo's and CL pads - both pretty much new. The RC5+ are great for track work but even with anti squeal pads, lots of copper grease etc they are a pain for road use. Hence why I recently got the Ferrodo's.

When I'm back from SPA after next weekend the CL's will be off and the Ferrodo's back in.

[BrightYellowTVR]

Interesting thread....

The Tamora I purchased needs a full rebuild (including a new crank) at the moment I am contemplating "just" a 3.6L standard rebuild however reading this thread is swaying me towards the 4.3L. Its with STR8SIX and I think the difference is around £4k more, having not really driven the car I am still undecided as I wasn't used to the 3.6L so am not yet wanting more power!

The warranties offered are the same however on both rebuilds...

Questions...

Will it add the £4k back onto a future sale price?
Will it be more attractive than a standard 3.6 from a purchasers point of view?
Was Insurance a lot more on the larger (modified) engine?
The Mrs is already not happy, how much more unhappy will she be

Back to the power is is really much nicer/faster to drive?.....I am very tempted!

Edited by BrightYellowTVR on Thursday 14th May 13:01

Edited by BrightYellowTVR on Thursday 14th May 13:03

[KillerJim]

QQ - How do you know she needs a rebuild? What were the signs?

[BrightYellowTVR]

KillerJim said:

QQ - How do you know she needs a rebuild? What were the signs?

Mine made a loud knocking noise and lost most of its power.

[mk1fan]

Did it go after you bought it? If it did that's unfortunate

I would say that it won't add the entire price to the value of the car, but it would add to the value. It would also make it more saleable.

[chris watton]

I cannot really comment on the Str8 Six 4.3, but for those that have had it, they do seem to have a more powerful engine compared to Powers' - but then it does cost a few £k more. I am sure the 4.3/4.5 engine TVR's will hold a premium come sale time, as most of the doubts about engine reliability will have been removed - I had mine done because I am sure this is what the TVR's would have had from new if they were still around today, with all of the old problems solved.

I am happy with mine, have now covered over 1200 miles since the rebuild and is starting to loosen up, although am still keeping revs below 3.5k, so short changing has been the order of the day. I have the post run-in service on 26th of this month. Have already had new tyres arrive to be fitted when serviced (Front - Toyo Proxes T1-Sport 225/40, Rear - Toyo Proxes T1-Sport 255/35), and I had the ACT big bore full exhaust system (along with my brand new Tuscan S cats) fitted last month. Am hoping that will help when I have it re-mapped and dyno'd after another few k miles.

I have no plans on selling mine, so whether the money spent will help value isn't really an issue for me - I just wanted the perfect Tam for me.

ETA - Insurance - when I informed my insurance company (Admiral) about the upgrade, they cancelled my policy there and then.

I didn't mind so much, as they didn't do an agreed value, and at the time, the car was valued at only £16k. I re-insured immediately with Mannings, with all mods/upgrades declared and an agreed value of around £30k - all they asked for was pictures of the car and a written statement from Dom.

Edited by chris watton on Thursday 14th May 14:03

Edited by chris watton on Thursday 14th May 14:06

[gacksen]

up to date havr just heard good things about str8six rebuilts. how much is it for one of their 4.3 rebuilts ?

are they using cast or forged pistons.... as for powers rebuilt casts ones are used

[chris watton]

gacksen said:

up to date havr just heard good things about str8six rebuilts. how much is it for one of their 4.3 rebuilts ?

are they using cast or forged pistons.... as for powers rebuilt casts ones are used

To be fair, I don't think that Dom would offer the warranty he does if the internals weren't up to the job.

[coco79]

chris watton said:

To be fair, I don't think that Dom would offer the warranty he does if the internals weren't up to the job.

Like any warranty, the devil is in the detail..

[gacksen]

chris watton said:

To be fair, I don't think that Dom would offer the warranty he does if the internals weren't up to the job.

got the point that you truely love the 4.3...

havent said any word about warranty. only said cast pistons are used at powers 4.3 rebuilt....

maybe str8six uses forged ones ? i dont know and if you dont know the difference between forged and cast pistons and why you could need them then its quite clear you dont need them

[chris watton]

gacksen said:

got the point that you truely love the 4.3...

havent said any word about warranty. only said cast pistons are used at powers 4.3 rebuilt....

maybe str8six uses forged ones ? i dont know and if you dont know the difference between forged and cast pistons and why you could need them then its quite clear you dont need them

....And it is quite clear that you don't love the 4.3.

Here's an idea, why don't you start your own thread regarding the merits, for and against, between cast and forged pistons, am sure it will make an interesting read.

[gacksen]

chris watton said:

....And it is quite clear that you don't love the 4.3.

Here's an idea, why don't you start your own thread regarding the merits, for and against, between cast and forged pistons, am sure it will make an interesting read.

there are plenty of resources online if somebody is interessted in the difference of cast and forged pistons so seems there is no need for that.

understandably on your side after spending 10k for bits and boobs of the 4.3 upgrade you expect the perfect engine.

there are other people that spent almost twice that amount but are still able to discuss pros and cons of an engine concept and built. maybe they should not have put the engine of my car in the current sprint magazine......

if this is some sort of best engine best engine builder best 4.3 thread go on praising but still cast pistons in the 4.3 built

[chris watton]

gacksen said:

there are plenty of resources online if somebody is interessted in the difference of cast and forged pistons so seems there is no need for that.

understandably on your side after spending 10k for bits and boobs of the 4.3 upgrade you expect the perfect engine.

there are other people that spent almost twice that amount but are still able to discuss pros and cons of an engine concept and built. maybe they should not have put the engine of my car in the current sprint magazine......

if this is some sort of best engine best engine builder best 4.3 thread go on praising but still cast pistons in the 4.3 built

But, I knew the pistons probably would not be changed even before I had the rebuild! The pistons are only changed if the originals are not in good condition. I know it is the crank and con rods that are replaced, as well as most of the top end.

What is your point?

[gacksen]

wanted to mention the pistons not in regards of any good or bad or warranty issues.
just came in mind due to the higher str8six 4.3 price that as out of my memory
included a new block, headwork and several other bits and pieces that are not
included in powers upgrade so therefore the higher HP figures with 4.3 str8six builts.


as when you take a look most of 4.3 dyno graphs are limited at around 6200rpm.
cant remember when the rev limiter hits in. does this have any reason ?

of course it does as Powers 4.3 liter has 96mm bore and 100mm stroke.
means at 6200 rpm piston speed is almost 70FPS or 4200FPM with hopefully
"perfect" cast pistons. F1 engines are not going above 5200FPM.
Dont know if it is still like this as development and regulations change
now and then.

In general consensus it is said for reliability sake to use forged pistons
with piston speeds above 4000FPM as cast ones are likely to fail around 4000-4500FPM.

correct me if i am wrong....

[chris watton]

On the modified S6 Wiki over in the S6 forum, it seems that max power (bhp) comes at around the late 6krpm mark, so revving up to 7k shouldn't be an issue still. (4.3/4.5)

I note that the FFF engines have their max power even higher up the rev range, 7.4-7.8k.

[gacksen]

chris watton said:

On the modified S6 Wiki over in the S6 forum, it seems that max power (bhp) comes at around the late 6krpm mark, so revving up to 7k shouldn't be an issue still. (4.3/4.5)

I note that the FFF engines have their max power even higher up the rev range, 7.4-7.8k.

it is. why has the 4.5 with the same stroke as the 4.3 means 100mm forgend pistons ?
just for this reason to get revs safely up. i guess with the 4.3 to keep a certain price
point in advertisement no forged pistons are used by default. of course money talks
if you want to have them. maybe another 500 to 1K pounds on top.

of course you can rev the 4.3 up to 8K if needed the question is only how long.....

[mk1fan]

As someone who regularily revs their 3.6, does that mean my pistons are going to break soon?