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shropshire lad

Original Poster:

342 posts

105 months

[news] 
Sunday 6th May 2012 quote quote all
Hello. Can anyone give advice please on what causes a whining noise , from just behind the engine , when under heavy engine breaking. It has only just started , I have not noticed a slipping clutch or any other problems . Thanks

shropshire lad

Original Poster:

342 posts

105 months

[news] 
Sunday 6th May 2012 quote quote all
Oh yes . I have a Chimaera 500 , but it can't be a specific Chimaera problem

tvrgit

8,177 posts

138 months

[news] 
Sunday 6th May 2012 quote quote all
sounds like backlash in the gearbox or differential. Make sure both are topped up to the right level with the correct oil. If that's ok, then it's probably excessive wear - gears themselves or syncromesh dogs - any problems with gear selection? any "clunks" when first accelerating or lifting off?

leerdam23

496 posts

147 months

[news] 
Sunday 6th May 2012 quote quote all
I can't recommend 'heavy' engine breaking in a TVR. its the quickest way to arse first into the armco etc... should use heal and toe and the break pedal...

shropshire lad

Original Poster:

342 posts

105 months

[news] 
Sunday 6th May 2012 quote quote all
With regard to oils they are all OK . Don't like the sound of excessive wear in the box
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shropshire lad

Original Poster:

342 posts

105 months

[news] 
Sunday 6th May 2012 quote quote all
No problems with gear selection either

MrOrange

873 posts

139 months

[news] 
Sunday 6th May 2012 quote quote all
leerdam23 said:
I can't recommend 'heavy' engine breaking in a TVR. its the quickest way to arse first into the armco etc... should use heal and toe and the break pedal...
  • heel
  • brake
What is it with the youth of today

Blues

8,508 posts

105 months

[news] 
Sunday 6th May 2012 quote quote all
leerdam23 said:
I can't recommend 'heavy' engine breaking in a TVR. its the quickest way to arse first into the armco etc
This yes

leerdam23

496 posts

147 months

[news] 
Sunday 6th May 2012 quote quote all
oops..! at least I managed to spell pedal correctly...

King Fisher

728 posts

65 months

[news] 
Sunday 6th May 2012 quote quote all
Blues said:
This yes
Indeed. I found this out the hard way.

heightswitch

4,366 posts

136 months

[news] 
Sunday 6th May 2012 quote quote all
MrOrange said:
  • heel
  • brake
What is it with the youth of today
Surely you missed a question mark? Or was it a statement? Perhaps the chap was just typing a comment and not under any impression he was entering a literary competition!

I note your insight into the mechanical issues with the car that the OP was seeking advice on!

NOB. or is that KNOB!!

heightswitch

4,366 posts

136 months

[news] 
Sunday 6th May 2012 quote quote all
shropshire lad said:
Hello. Can anyone give advice please on what causes a whining noise , from just behind the engine , when under heavy engine breaking. It has only just started , I have not noticed a slipping clutch or any other problems . Thanks
2nd gear tends to absorb lots of torque in a T5 during power on application..similarly 3rd tends to be the gear set that does most engine braking. Is the car experiencing the symptom in any particular gear..if not and it happens in any gear then It would point more toward the diff.If as you say it is coming from the front of the car then general wear of the gearbox may be the cause..

When was your gearbox oil last changed?

N.


Edited by heightswitch on Sunday 6th May 21:52

rigga

4,629 posts

87 months

[news] 
Sunday 6th May 2012 quote quote all
MrOrange said:
leerdam23 said:
I can't recommend 'heavy' engine breaking in a TVR. its the quickest way to arse first into the armco etc... should use heal and toe and the break pedal...
  • heel
  • brake
What is it with the youth of today
What is it with people who contribute nothing to the op's issues, rather just pick at the spelling and grammer


Pistonheads is awash with loads of folk who find nothing better to do .... if you can't say anything nice,say nothing as my old man used to say .

bobfather

9,197 posts

141 months

[news] 
Sunday 6th May 2012 quote quote all
leerdam23 said:
I can't recommend 'heavy' engine breaking in a TVR. its the quickest way to arse first into the armco etc... should use heal and toe and the break pedal...
There is a very important message here; I have to admit I cringed when I read the OP's question. Over use of engine braking in a RWD car is a sure way of heading straight to your accident. Most people learn to drive in FWD cars and spend most of the early driving years in the same, it's no wonder engine braking becomes a major method of slowing a car down. Sure you can engine brake a RWD car but don't do it hard and never do it when traction is compromised. Heavy engine braking is even more worrying. Your rear wheels must always be rotating at road speed, if you engine brake rear wheels on a light weight rear end you risk forcing the rear wheels to rotate slower than road speed, loss of directional control is pretty much inevitable.

shropshire lad

Original Poster:

342 posts

105 months

[news] 
Monday 7th May 2012 quote quote all
heightswitch said:
2nd gear tends to absorb lots of torque in a T5 during power on application..similarly 3rd tends to be the gear set that does most engine braking. Is the car experiencing the symptom in any particular gear..if not and it happens in any gear then It would point more toward the diff.If as you say it is coming from the front of the car then general wear of the gearbox may be the cause..

When was your gearbox oil last changed?

N.


Edited by heightswitch on Sunday 6th May 21:52
Hello and thanks for responding . The gearbox oil is changed annually and the car only does about 5000 miles per year.
In response to those concerned about engine breaking , I would only consider it on a completely dry road , and even then I am not talking about track style driving . However I take your point and agree that its probably best not to do it at all.
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