Cam Replacement Suggestions
Discussion
phazed said:
SILICONEKID 345HP 12.03 said:
Those triples are a waste of money ..
Not sure if they do alot .
A very good point.Not sure if they do alot .
I would say they develope more torque but Chilli's is the opposite!!!
It's so tricky to know what works and what merely looks nice.
The blended base is another one. I sooooo... want to buy one, but cannot work out why as one cannot even see it and I have heard no evidence it generates any more power.
QBee said:
Ah, but they do look nice......as does a lot of stuff we can buy for our cars.
It's so tricky to know what works and what merely looks nice.
The blended base is another one. I sooooo... want to buy one, but cannot work out why as one cannot even see it and I have heard no evidence it generates any more power.
Rather weirdly my de cat Y piece looks very impressive but didn't offer 1mph gain on the strip. It's so tricky to know what works and what merely looks nice.
The blended base is another one. I sooooo... want to buy one, but cannot work out why as one cannot even see it and I have heard no evidence it generates any more power.
Pete's car didn't seem that much faster with the blended base either.
Mines done 20,000 + since refresh so cams bound to be worn. 12.604, so nearly in the 12.5's
Kent 885. It's all a muchness! Big compression and even bigger pistons and even bigger heads is the only way n/a or your faffing about spending money for nothing.
Saying that I want a 72 mm plenum and bellmouth trumpets and twin air filters
QBee said:
Stuck a Range Rover cam in my current engine......not suggesting the OP does.
I had a stealth cam with my 5 litre engine, it gave me a really good level of torque over a very wide rev range. No idea if this would help a 4 litre.
First question, what driving are you intending?
General B road etc on a Sunday,
commuting,
long distance touring,
track days?
Second question, what is your driving style/ other car(S). I found the wide torque range great because I am slightly lazy with gear changes and tend to drive larger engined, diesel automatics. But I also enjoy a track day or 20, and the stealth cam on a 5 litre engine made for a great track day car.
No real commuting. It'll be my only car but I won't cover much distance. B Road stuff definitely. I had a stealth cam with my 5 litre engine, it gave me a really good level of torque over a very wide rev range. No idea if this would help a 4 litre.
First question, what driving are you intending?
General B road etc on a Sunday,
commuting,
long distance touring,
track days?
Second question, what is your driving style/ other car(S). I found the wide torque range great because I am slightly lazy with gear changes and tend to drive larger engined, diesel automatics. But I also enjoy a track day or 20, and the stealth cam on a 5 litre engine made for a great track day car.
Edited by QBee on Saturday 20th May 20:08
I tend to use the bottom end of the Rev range more, so a good chunk of torque there would be handy but I wouldn't want to miss out on a lively top end.
I think I'm leaning towards the Stealth Cam as I've checked and it's got double springs and pocketed pistons, so I think it would suit that setup?
Does V8D supply the shims to set the preload too? No idea how to do it but I'll find a thread
Classic Chim 300bhp 12.604 said:
Rather weirdly my de cat Y piece looks very impressive but didn't offer 1mph gain on the strip.
Pete's car didn't seem that much faster with the blended base either.
Mines done 20,000 + since refresh so cams bound to be worn. 12.604, so nearly in the 12.5's
Kent 885. It's all a muchness! Big compression and even bigger pistons and even bigger heads is the only way n/a or your faffing about spending money for nothing.
Saying that I want a 72 mm plenum and bellmouth trumpets and twin air filters
.Pete's car didn't seem that much faster with the blended base either.
Mines done 20,000 + since refresh so cams bound to be worn. 12.604, so nearly in the 12.5's
Kent 885. It's all a muchness! Big compression and even bigger pistons and even bigger heads is the only way n/a or your faffing about spending money for nothing.
Saying that I want a 72 mm plenum and bellmouth trumpets and twin air filters
You cant get over it Alun ! Let it go let it go .
SILICONEKID 345HP 12.03 said:
.
You cant get over it Alun ! Let it go let it go .
You cant get over it Alun ! Let it go let it go .
I've not even looked at the car since, disgusted with it so I am
Hard shocks tyre's rubbing, air filter blocked. 12.4 allday with MT's ( not rubbing )
Not so bad for a bog standard engine with many thousands of miles under its belt.
I'll never get over it
I had you worried enough to not let me use the right hand lane,,, had the hump with you after that. I beat you off the line the next go.
It's your diff, son of a gun, not changing unto 4 th, kin el I'm in forth hundred yards from the line !!! And I'm only 5 /10 ths behind you,,, 5 fast blinks of your eye is a second so I'm 2.5 blinks behind you doesn't sound far when I put it like that. The distance is two cars +
I'm inconsolable
It's your diff, son of a gun, not changing unto 4 th, kin el I'm in forth hundred yards from the line !!! And I'm only 5 /10 ths behind you,,, 5 fast blinks of your eye is a second so I'm 2.5 blinks behind you
doesn't sound far when I put it like that. The distance is two cars + I'm inconsolable
Classic Chim 300bhp 12.604 said:
I had you worried enough to not let me use the right hand lane,,, had the hump with you after that. I beat you off the line the next go.
It's your diff, son of a gun, not changing unto 4 th, kin el I'm in forth hundred yards from the line !!! And I'm only 5 /10 ths behind you,,, 5 fast blinks of your eye is a second so I'm 2.5 blinks behind you doesn't sound far when I put it like that. The distance is two cars +
I'm inconsolable
Have a look on the net and see what sports cars do the quarter mile in .It's your diff, son of a gun, not changing unto 4 th, kin el I'm in forth hundred yards from the line !!! And I'm only 5 /10 ths behind you,,, 5 fast blinks of your eye is a second so I'm 2.5 blinks behind you
doesn't sound far when I put it like that. The distance is two cars + I'm inconsolable
You find you have a super car .
SILICONEKID 345HP 12.03 said:
Have a look on the net and see what sports cars do the quarter mile in .
You find you have a super car .
Small consolation. Cheers You find you have a super car .
I'm more amazed it starts everytime and does a good job of being normal and that does impress me with it.
I'm just fed up I didn't do more on Derek's tyre's. I wanted to know I'd hit the limit of me and the cars spec and there's this nagging doubt the tyre rubbing robbed me a couple of tenths up the road. You get tuned in and it just felt slow FFS. I was away much faster and just lost it all the further I went up the road.
The 885 in mine seems to do a very good job and I'm happy enough with it
First hand experiences on the 4ltr engine
Range Rover Cam- Phenomenal mid range pick up great for overtaking, but done and dusted around 5k when it hits an RPM wall.
Piper 270- Luke warm, revs well to 6 k plus and nice idle, but no perceptible power band. and not much else to recommend it
MC1- good idle, pickup and pulls like a train up to 6 k
Typhoon, lumpy idle, but good mid range and strong power band towards 6k,
Not come across a stealth on a 4ltr- I thought it better suited to the 5ltr engine?
Range Rover Cam- Phenomenal mid range pick up great for overtaking, but done and dusted around 5k when it hits an RPM wall.
Piper 270- Luke warm, revs well to 6 k plus and nice idle, but no perceptible power band. and not much else to recommend it
MC1- good idle, pickup and pulls like a train up to 6 k
Typhoon, lumpy idle, but good mid range and strong power band towards 6k,
Not come across a stealth on a 4ltr- I thought it better suited to the 5ltr engine?
phazed 11.83 said:
ChilliWhizz said:
(It's an H404)
That's the cam that I have Daz it's one of Rob's 'special' grinds... That and the ACT triple is why beastie is so much quicker than that old thing you potter about in
How strange that yours has an H404 camshaft. Your engine has completely different characteristics to mine. That's the cam that I have Daz it's one of Rob's 'special' grinds... That and the ACT triple is why beastie is so much quicker than that old thing you potter about in
You're right about the torque thing though, I seem to be about the only one that has an engine (certainly a V8D one) that has less torque than BHP.... Rob did build the engine to be a track focussed lump so I can understand the BHP over torque philosophy... I have been thinking recently though of putting a Stealth cam in, make it a slightly more lazy drive....
Might do it during the imminent body off job
As for the triple, I have no idea how much BHP or torque it contributes to the overall output, but it must be said the throttle response is mighty
Never knew a camshaft could give you an out of body experience...
Blitzracing's comments about the Range Rover cam match with my recent experiences - with the RR cam my new engine's torque and bhp are done and dusted not much above 5000 rpm. I will have to stop thinking it's an automatic, and driving everywhere, including on track, in 4th.
For the OP's reference, here's the stealth cam on my 5 litre: lovely wide torque band, bhp and torque on the same scale as each other
and here's the RR cam on my new 4.6 turbo. it's actually 3 graphs - there are three map settings on my ECU now, as I had it changed to Emerald: much narrower torque band, albeit somewhat higher - beware, the scales are different, the torque scale is now 2 x the bhp one
Blitzracing's comments about the Range Rover cam match with my recent experiences - with the RR cam my new engine's torque and bhp are done and dusted not much above 5000 rpm. I will have to stop thinking it's an automatic, and driving everywhere, including on track, in 4th.
For the OP's reference, here's the stealth cam on my 5 litre: lovely wide torque band, bhp and torque on the same scale as each other
and here's the RR cam on my new 4.6 turbo. it's actually 3 graphs - there are three map settings on my ECU now, as I had it changed to Emerald: much narrower torque band, albeit somewhat higher - beware, the scales are different, the torque scale is now 2 x the bhp one
QBee said:
Looking at that explains one thing I hadn't realised - I was thinking that the lowest map, which i use as a road map, felt just like my old 5 litre.
There is a reason for that; the low map, which is 2.5 psi of boost, IS almost exactly the same as my stealth map.
Is that about 525 ft lb torque, who needs gears There is a reason for that; the low map, which is 2.5 psi of boost, IS almost exactly the same as my stealth map.
Classic Chim said:
QBee said:
Looking at that explains one thing I hadn't realised - I was thinking that the lowest map, which i use as a road map, felt just like my old 5 litre.
There is a reason for that; the low map, which is 2.5 psi of boost, IS almost exactly the same as my stealth map.
Is that about 525 ft lb torque, who needs gears There is a reason for that; the low map, which is 2.5 psi of boost, IS almost exactly the same as my stealth map.
The 372 bhp track map peaks at 475 torques and
the 395 bhp airfield map peaks at 525 torques.
Looking forward to driving it in anger - until then it is all just torque
Edited by QBee on Sunday 21st May 15:15
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