Speed 6 Rev Limit

[FOG]

What is the rev limit for the 3.6 engine ? The tech specs state max power is at 7200 and so I suppose it's beyond that but there's no indication of the max on the rev counter or owners manual. What are the reliability implications of going above 7200 ?

[Targarama]

Once really really warmed up the odd foray into higher revs won't hurt much. There is a rev limiter somewhere up the 7's, I've only hit it once or twice.

Note that sustained very high revs are probably the second most wearing thing on an engine after thrashing when cold.

[Daftlad]

FOG said:

What is the rev limit for the 3.6 engine ? The tech specs state max power is at 7200 and so I suppose it's beyond that but there's no indication of the max on the rev counter or owners manual. What are the reliability implications of going above 7200 ?

Some of the cars rev limiters kicked in around 8250.

If the engine is hot, 7500 is not an issue. Reliability problems....do high revs wear out engines?

Yes, use more over a long period and the engine will wear out quicker than one not reved so high over the same period, all other things being equal.

Do high revs break engines -statistics suggest, and you can make them prove pretty much what you want, that the 3,6 is pretty sound.

Now engage in some deep thought and ask why you bought the car. Probably to enjoy? If the answer is yes, then I would suggest that more fun is to be had further up the rev range.

Engines have more than one life, humans not so.

Note....mine are serviced to death to try and extend duration between re-builds

[rev-erend]

Because of known engine issues - I programmed my yellow shift at 6500, and red at 6800..

Better safe than 6K for a rebuild.

[twizellb]

Daftlad said:

FOG said:

What is the rev limit for the 3.6 engine ? The tech specs state max power is at 7200 and so I suppose it's beyond that but there's no indication of the max on the rev counter or owners manual. What are the reliability implications of going above 7200 ?

Some of the cars rev limiters kicked in around 8250.

If the engine is hot, 7500 is not an issue. Reliability problems....do high revs wear out engines?

Yes, use more over a long period and the engine will wear out quicker than one not reved so high over the same period, all other things being equal.

Do high revs break engines -statistics suggest, and you can make them prove pretty much what you want, that the 3,6 is pretty sound.

Now engage in some deep thought and ask why you bought the car. Probably to enjoy? If the answer is yes, then I would suggest that more fun is to be had further up the rev range.

Engines have more than one life, humans not so.

Note....mine are serviced to death to try and extend duration between re-builds

Hi john,how high do you rev your sagaris,have checked my recall facility on my 4.0 Tuscan and it show's maximum rev's used as 7300 i have the red shift light programmed to come on at 7200. i will have changed the oil 3times in 6000mls come this weekend as mrs T and i are heading for the south of france via germany,austria and italy starting next friday.

[biker's nemesis]

twizellb said:

Daftlad said:

FOG said:

What is the rev limit for the 3.6 engine ? The tech specs state max power is at 7200 and so I suppose it's beyond that but there's no indication of the max on the rev counter or owners manual. What are the reliability implications of going above 7200 ?

Some of the cars rev limiters kicked in around 8250.

If the engine is hot, 7500 is not an issue. Reliability problems....do high revs wear out engines?

Yes, use more over a long period and the engine will wear out quicker than one not reved so high over the same period, all other things being equal.

Do high revs break engines -statistics suggest, and you can make them prove pretty much what you want, that the 3,6 is pretty sound.

Now engage in some deep thought and ask why you bought the car. Probably to enjoy? If the answer is yes, then I would suggest that more fun is to be had further up the rev range.

Engines have more than one life, humans not so.

Note....mine are serviced to death to try and extend duration between re-builds

Hi john,how high do you rev your sagaris,have checked my recall facility on my 4.0 Tuscan and it show's maximum rev's used as 7300 i have the red shift light programmed to come on at 7200. i will have changed the oil 3times in 6000mls come this weekend as mrs T and i are heading for the south of france via germany,austria and italy starting next friday.

Not forgetting your European breakdown cover William.

[twizellb]

biker's nemesis said:

twizellb said:

Daftlad said:

FOG said:

What is the rev limit for the 3.6 engine ? The tech specs state max power is at 7200 and so I suppose it's beyond that but there's no indication of the max on the rev counter or owners manual. What are the reliability implications of going above 7200 ?

Some of the cars rev limiters kicked in around 8250.

If the engine is hot, 7500 is not an issue. Reliability problems....do high revs wear out engines?

Yes, use more over a long period and the engine will wear out quicker than one not reved so high over the same period, all other things being equal.

Do high revs break engines -statistics suggest, and you can make them prove pretty much what you want, that the 3,6 is pretty sound.

Now engage in some deep thought and ask why you bought the car. Probably to enjoy? If the answer is yes, then I would suggest that more fun is to be had further up the rev range.

Engines have more than one life, humans not so.

Note....mine are serviced to death to try and extend duration between re-builds

Hi john,how high do you rev your sagaris,have checked my recall facility on my 4.0 Tuscan and it show's maximum rev's used as 7300 i have the red shift light programmed to come on at 7200. i will have changed the oil 3times in 6000mls come this weekend as mrs T and i are heading for the south of france via germany,austria and italy starting next friday.

Not forgetting your European breakdown cover William.

Seem to recall you needing yours not long ago on the epic journey from nemisis towers to work![longbenton]tricky little buggers them focuses

[biker's nemesis]

[The Pits]

I couldn't get more than an indicated 7500 rpm from my Sagaris. I suspect the rev limit has be lowered (it was supposed to rev to 7800) as part of the quest for longevity. It was definitely still pulling hard at that point and sounding ferocious!

[Daftlad]

The Pits said:

I couldn't get more than an indicated 7500 rpm from my Sagaris. I suspect the rev limit has be lowered (it was supposed to rev to 7800) as part of the quest for longevity. It was definitely still pulling hard at that point and sounding ferocious!

Should rev all the way round to an indicated 8K but not much point unless youre hanging onto a gear to gain some time against the clock. Mine sees the mid sevens and a little beyond for short periods and its still pulling strongly.

[dvs_dave]

My '01 S spec engine bumps into the limiter at 7400 rpm.

[astonman]

Have seen just over 8000 on my 2005 spec T350'

[VARLEYHYD]

The Pits said:

I couldn't get more than an indicated 7500 rpm from my Sagaris. I suspect the rev limit has be lowered (it was supposed to rev to 7800) as part of the quest for longevity. It was definitely still pulling hard at that point and sounding ferocious!

May 06 Sagaris is 7800 limiter

You can check what max rpm & maximum speed you have hit (& reset it) if you go into the POD menu

[The Pits]

that was how I found out it hit a maximum 7500 during my ownership.

[johnbear]

If you all remember that discussion with Al Melling a few weeks ago, you will recall that in his opinion that 6800rpm was the max for the engine. Any higher takes the piston velocity passed it's design limits (may be even that of f1 engines). The size of the pistons puts too much force on the rods and pins causing 6th cylinder failure.

Edited by johnbear on Thursday 5th July 20:30

[dvs_dave]

This rev limit business has been banded around for a while now yet the only S6 I've heard of letting go in this way was one of the early TVR Craft rebuilds whilst on the rollers. I think 7500 rpm was the magic mumber?

[S5TVR]

rev-erend said:

Because of known engine issues - I programmed my yellow shift at 6500, and red at 6800..
Better safe than 6K for a rebuild.

That sounds like good advice to me. I had my T350c re-mapped at Austec yesterday and Paul was saying that revving the nuts off the SP6 is going to do it no good at all. Following the re-map (highly recommended by the way - see my comments on the general TVR forum) my 3.6 now produces peak power lower down at 6,800rpm so higher revs are giving no extra benefit and will only lead to wear. Shift lights now changed to 6,000 (green), 6,400 (amber) and 6,800 (red).

[Whitey]

S5TVR, I totally agree. Any revs over 6800-7000 are just contributing to engine wear.

[Daftlad]

Whitey said:

S5TVR, I totally agree. Any revs over 6800-7000 are just contributing to engine wear.

More S6 bollox.

[Whitey]

OK Daftlad, I will add to that. In a racing situation I might hold the gear a bit longer, but since I dont race my Tuscan I don't need to.

All IMHO, and I guess your view is all in yours.

This is my dyno graph, so IMHO I personally don't need to rev it higher than about 6800, maybe your car is very different.

I will not be back on PH until Sun evening, so will read your reply then.

Enjoy the sun in your car this weekend!
cheers
Whitey