Sports Cam or Worn Cam?
Discussion
Hi guys, something that's been bugging me for a while is the cam setup of my car. Here's a video of how it sounds at least:
http://www.youtube.com/watch?v=qJ2kGNpSw3k
(Cold start here)
It is quite a bit better now having replaced plugs and when the car is fully warmed up but it's still very shunty at low revs and can suffer from a poor idle, particularly when cold.
The previous owner told me it was fitted with a high lift cam. It even had HC added to the vehicle info in the handbook, which was later cut out because it isn't a HC. The car had an engine rebuild 29,000 miles ago which included a new camshaft @ £128(+VAT) in 2000.
It certainly doesn't feel down on power- it's like a bullet, as soon as you want the power the car squats and gives it. But with this being my first TVR, how do I know?
Basically, how can I tell the difference? Any opinions?
http://www.youtube.com/watch?v=qJ2kGNpSw3k
(Cold start here)
It is quite a bit better now having replaced plugs and when the car is fully warmed up but it's still very shunty at low revs and can suffer from a poor idle, particularly when cold.
The previous owner told me it was fitted with a high lift cam. It even had HC added to the vehicle info in the handbook, which was later cut out because it isn't a HC. The car had an engine rebuild 29,000 miles ago which included a new camshaft @ £128(+VAT) in 2000.
It certainly doesn't feel down on power- it's like a bullet, as soon as you want the power the car squats and gives it. But with this being my first TVR, how do I know?
Basically, how can I tell the difference? Any opinions?
Is that full De cat! Sounds very loud.
Mine came fully catted and Ive changed for a de cat Y.
Sounds similar at the front, more tinny rattly sort of thing.
Sounded ok to me.
The cam. From cold is it noisy for a second or two! Lazy follower or worn lobe or stood to long between starts, aka mine!
Looks rather nice though.
Mine came fully catted and Ive changed for a de cat Y.
Sounds similar at the front, more tinny rattly sort of thing.
Sounded ok to me.
The cam. From cold is it noisy for a second or two! Lazy follower or worn lobe or stood to long between starts, aka mine!
Looks rather nice though.
Yeah my Y is the original type that's been cut open and the cat removed, it seems much faster but is also lots louder.
So are you concerned by engine mechanical noises or just rough running.
Sounded like a Cobra,, it can't be that bad., lol
Cobra , bloody Eck it must be bed time.
I'm sure the brains will have a listen and point you in the right direction by the morning.
So are you concerned by engine mechanical noises or just rough running.
Sounded like a Cobra,, it can't be that bad., lol
Cobra , bloody Eck it must be bed time.
I'm sure the brains will have a listen and point you in the right direction by the morning.
Just worried about the rough running to be honest! That's exactly how I describe it, I love that Cobra burble.
Of course I don't want the car to be down on power though. If it is a sports cam fitted and in good nick then I'd happily keep the drivability issues for the extra oomph. The car is beautiful once I get out of traffic!
Of course I don't want the car to be down on power though. If it is a sports cam fitted and in good nick then I'd happily keep the drivability issues for the extra oomph. The car is beautiful once I get out of traffic!
You nutter, that's got me chuckling, people ten miles away must have looked up and wondered if it was thundering,
I had a Renault Master Van years ago and the exhaust manifold blew off just about!
I was young and thought I'd just drive it home, 100 miles!
I got 10 miles down the M6 and stopped at the services. Stone deaf, I got toilet role and stuffed my ears with it, hammered down at 80 all the way.
My ears were ringing for a full 24 hours and I can still hear that noise now!!!! Lol
It makes you realise just how big those bangs inside the engine really are!
I had a Renault Master Van years ago and the exhaust manifold blew off just about!
I was young and thought I'd just drive it home, 100 miles!
I got 10 miles down the M6 and stopped at the services. Stone deaf, I got toilet role and stuffed my ears with it, hammered down at 80 all the way.
My ears were ringing for a full 24 hours and I can still hear that noise now!!!! Lol
It makes you realise just how big those bangs inside the engine really are!
Its far to late but explain what you actually experience regards rough running etc.
mines re built runs lovely and hasn't got a cam issue whatsoever but at low revs/speed I have to ride the clutch a touch to keep the transmission smooth.
Like a ford Sierra!
As usual Alex all the other bits are all ok I presume. Plugs leads cap etc
Do you have a power surge over 3000 revs, if so you've probably got a meaty cam.
He e you got the receipt for the cam, any details numbers etc, try belling the place that provided the cam to identify it!
mines re built runs lovely and hasn't got a cam issue whatsoever but at low revs/speed I have to ride the clutch a touch to keep the transmission smooth.
Like a ford Sierra!
As usual Alex all the other bits are all ok I presume. Plugs leads cap etc
Do you have a power surge over 3000 revs, if so you've probably got a meaty cam.
He e you got the receipt for the cam, any details numbers etc, try belling the place that provided the cam to identify it!
Alexdaredevils said:
It does when it's cold.And might try that actually, currently running 5W40 super synth.
AlexHillTVR said:
It does when it's cold.
And might try that actually, currently running 5W40 super synth.
This might be better .Dave knows a good supplier .And might try that actually, currently running 5W40 super synth.
http://www.penriteoil.com.au/products-categ.php?id...
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