Engine noise
Engine noise
Author
Discussion

sideways mostly

Original Poster:

2,681 posts

257 months

Thursday 1st July 2004
quotequote all
Hmmmm wonder if any of the more experienced...if you know what I mean...can help.

Got a lurvely Tuscan S which is my first TVR. I love it to bits but the paranoia is setting in.

Its all about engine sounds.

Basically the problem is at about 3500 rpm the engine noise sounds very hashy on top of the roar- a bit like a loose chain thrashing about. Its very dominant-i.e the loudest sound,but there are no signs of any lack of power,no smoke,nothing except a very rough sound .

Its more pronounced with the lid on and is replaced by the snarl and then just plain glorious yammer of a speed six approaching full chat as the revs rise.

Oil temp and pressure are fine.

Been up to twice what you'd expect a responsible citizen to do with no problems.

It may be I am a bit aurally focussed-I can clearly hear the cams below 3500 making a clean sewing machine like murmer above the burble and blat of the exhaust.

Just worrying-is it nothing-is it a shim problem,is it an impending diaster.

Anyone out there heard what I am hearing,knows if its a problem?

Anyone?

TUS 373

4,947 posts

297 months

Thursday 1st July 2004
quotequote all
I think I know where you are coming from. I felt the same when I got my Tuscan - a kind of harsher sound starting around 2800 rpm in mine that sounds 'thrashy'. I compared notes with others and drove a couple of cars - and they were all the same.

Naturally, I cannot hear your car's engine, but I would wager that unless it sounds like something is 'obviously' wrong, then I would suspect it is infact just one of the Speed Six's characteristics and is find and normal.

R666 TUS

1,052 posts

256 months

Friday 2nd July 2004
quotequote all
Mine was the same too but then got a bit
worse and turned out to be worn followers.
For the sake of an hour's labour I would
have your dealer take a look just to put
your mind at rest. Hope all is o.k.as they are
very mechanical sounding by nature.

Col

andyvdg

1,537 posts

299 months

Friday 2nd July 2004
quotequote all
Sounds like you are just descrobing the "sewing machine" speed six, which is most prominant at 2-3500k rpm. But worth getting a dealer's ear to check it out for peace of mind.

Cheers,

Andy.

Bitter'n'twisted

595 posts

274 months

Friday 2nd July 2004
quotequote all

Sounds like the timing chain to me.

I had this where the rattle (loose chain) type sound comes in at around 3500 ish.

Took it to the dealer who said as much and not to worry about it. So I didn't.

Soon afterwards it was adjusted as part of the normal service schedule (the 6k service) and fine since!

Try and get a good dealer to have a listen.

How many miles has it done / miles until next service?

matt_c

186 posts

261 months

Friday 2nd July 2004
quotequote all
May not be FF as they are noisy through out the rev range. Could be timing chain worn, and rattling against the camcover at ressonance... mine did this. I suggest get it checked...

basil brush

5,359 posts

279 months

Friday 2nd July 2004
quotequote all
Mine is making a timing chain type racket but it´s worse at lower revs, especially when cold. It´s going in for it´s 24k service on Monday so I´ll let you know what I find out.

millerman

817 posts

254 months

Friday 2nd July 2004
quotequote all
Mine has just had a re-build and is due to go in next week for 1000mile tighten up. It makes a similar noise especially when cold. I shall see how it sounds after the tighten up.

It also makes a noise when I ease off on the go pedal, usually about 2600 to 2900 rpm, the noise is a sort of drive train rumble/whine.

Other than that the oil water etc are all good. Being a TVR owner of only two weeks I dont know what to expect either.

Nick

sideways mostly

Original Poster:

2,681 posts

257 months

Saturday 3rd July 2004
quotequote all
Many thanks everyone!

Took a bit of time to reply as I've been VBB.

The car is a 2002 but has only 3200 miles on the clock.I bought it about a month ago and have put the 1000 on it during this time.( It only did 320 miles last year!!)

Its had its first service and certainly there is nothing wrong with the performance.

I am releived to hear your feedback-great site this-and I will get the TVR Centre to listen to it next time I am up there-they are a great bunch-

I missed the Ace Cafe meet last night but if any of you go next month the buns are on me.

Cheers!

DOH!-just been scanning your profiles-and most of you are North Of Watford (NOW) -sorry chaps -stupid southern softie!


>> Edited by sideways mostly on Saturday 3rd July 10:34

simon t

2,155 posts

289 months

Tuesday 6th July 2004
quotequote all
SM, I've had mine for 6 months now and been through most of the usual paranoias(sp?). Mine has done 10K miles since it's last rebuild, 6 of which I have done.

It sounds lik a sack of hammers when cold - I have come to the conclusion this a design feature to stop you reving it till it is warm. Even when warm it still sounds prettey rattly compared to a normal engine with hydraulic followers.

Hoever....it goes like F*CK!!! EVERYWHERE!!!!

So just treat in nice whilst it's clod then have some fun - All will be OK

Simon

sideways mostly

Original Poster:

2,681 posts

257 months

Tuesday 6th July 2004
quotequote all
Thank you all for your help-unfortunately I may have a problem.

I am now experiencing exceptionally high oil pressure on tickover 65-70 and I am getting a misfire- sounds like one cylinder.

Once it has warmed up oil pressure drops to 22 on idle which I regard as normal and it sounds smoother but still irregular.

Just stared happening today.

I will get it to the dealer asap but I am away on business now until Saturday.

I do remeber a thread on misfires but have done a search-nothing relevant comes up.

Appreciate any info.

Anyone experienced this at all?

>> Edited by sideways mostly on Tuesday 6th July 22:31

whitey

2,508 posts

300 months

Wednesday 7th July 2004
quotequote all
oil pressure sounds normal. What rpm does it idle at when hot? Anything less than 700rpm could mean you need your valve clearances adjusted. Misfire could be a number of things. Get your dealer to check it.

cheers
Whitey

Bitter'n'twisted

595 posts

274 months

Wednesday 7th July 2004
quotequote all

Mis fire is probably throttle bodies needing adjusting.

I had this as well. They tend to start going out of normal adjustment after a while (3000 miles? they probably all vary). Only a 20 minute job for the garage to set up.

I've often heard the worrying comment that if the base idle is falling then it is the valve clearances closing and your engine needs looking at asap. But again, on mine the falling base idle has only been down to the throttle bodies going out of adjustment.


sideways mostly

Original Poster:

2,681 posts

257 months

Thursday 8th July 2004
quotequote all
B'n'T it idles at about 500 when hot-this is also new as it used to be a rock steady 700.

Whitey-you are bang on- its got 3200 on the clock.

Sounds like a trip to Barnet then-thanks both of you.
And I love the 51 Ford Whitey!

and the Tuscan of course.

Feeling happier-going to get a beer.

Cheers



>> Edited by sideways mostly on Thursday 8th July 23:18

HeyAndy

423 posts

265 months

Thursday 8th July 2004
quotequote all
sideways mostly said:
Hmmmm wonder if any of the more experienced...if you know what I mean...can help.

Got a lurvely Tuscan S which is my first TVR. I love it to bits but the paranoia is setting in.

Its all about engine sounds.

Basically the problem is at about 3500 rpm the engine noise sounds very hashy on top of the roar- a bit like a loose chain thrashing about. Its very dominant-i.e the loudest sound,but there are no signs of any lack of power,no smoke,nothing except a very rough sound .

Its more pronounced with the lid on and is replaced by the snarl and then just plain glorious yammer of a speed six approaching full chat as the revs rise.

Oil temp and pressure are fine.

Been up to twice what you'd expect a responsible citizen to do with no problems.

It may be I am a bit aurally focussed-I can clearly hear the cams below 3500 making a clean sewing machine like murmer above the burble and blat of the exhaust.

Just worrying-is it nothing-is it a shim problem,is it an impending diaster.

Anyone out there heard what I am hearing,knows if its a problem?

Anyone?



Sounds like the begining of the end of your engine. Don't leave it a moment too soon, get it checked before it goes bang and leaves you embarassed at the roadside.

swilly

9,699 posts

290 months

Friday 9th July 2004
quotequote all
Mine makes the "thrash the tin dustbin to within an inch of its life" when it is warming up, and has done for the last 12000 miles.

Goes away when warmed up.

andyvdg

1,537 posts

299 months

Friday 9th July 2004
quotequote all
HeyAndy said:

sideways mostly said:
Hmmmm wonder if any of the more experienced...if you know what I mean...can help.

Got a lurvely Tuscan S which is my first TVR. I love it to bits but the paranoia is setting in.

Its all about engine sounds.

Basically the problem is at about 3500 rpm the engine noise sounds very hashy on top of the roar- a bit like a loose chain thrashing about. Its very dominant-i.e the loudest sound,but there are no signs of any lack of power,no smoke,nothing except a very rough sound .

Its more pronounced with the lid on and is replaced by the snarl and then just plain glorious yammer of a speed six approaching full chat as the revs rise.

Oil temp and pressure are fine.

Been up to twice what you'd expect a responsible citizen to do with no problems.

It may be I am a bit aurally focussed-I can clearly hear the cams below 3500 making a clean sewing machine like murmer above the burble and blat of the exhaust.

Just worrying-is it nothing-is it a shim problem,is it an impending diaster.

Anyone out there heard what I am hearing,knows if its a problem?

Anyone?




Sounds like the begining of the end of your engine. Don't leave it a moment too soon, get it checked before it goes bang and leaves you embarassed at the roadside.


Have you got a Tuscan ?

dvpeace

611 posts

256 months

Friday 9th July 2004
quotequote all
HeyAndy said:


Sounds like the begining of the end of your engine. Don't leave it a moment too soon, get it checked before it goes bang and leaves you embarassed at the roadside.


You obviously have never driven one. You have not got a clue!


>> Edited by dvpeace on Friday 9th July 15:49

basil brush

5,359 posts

279 months

Saturday 10th July 2004
quotequote all
Just got my car back from the service. It was idling at about 600 when warm and making all sorts of noises before. TVR have reset the valve clearances, timing chain etc and it now runs and sounds perfect again. I didn´t believe it was my car when I heard it coming out of the workshop. It´s amazing how bad these engines can sound even with nothing major wrong.

Marcus

HeyAndy

423 posts

265 months

Sunday 11th July 2004
quotequote all
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