I want to change cam on my 4.3, what do you recomand?

[PH430]

I what to change my cam on my 4.3.
There are 53000 mls on it and never done a cam change.

I want a fast road and trackday car.

What do you recomand.

Thanks for all comments.

[Pupp]

Do you want to stay hydraulic or go to solid lifters? Roller rockers? Double or single valve springs? Pocketed pistons? Are you intending to stay with a single plenum?

[PH430]

Pupp said:

Do you want to stay hydraulic or go to solid lifters? Roller rockers? Double or single valve springs? Pocketed pistons? Are you intending to stay with a single plenum?

I will stay on hydrolic lifters. 4.3 have double springs and pocket pistons.
I want to stay on single plenum but maybe in the future to ACT double plenum.

[Pupp]

I'd be having a chat with Rob about one of these as a starter...

http://www.v8developments.co.uk/products/camshafts...

[PH430]

Has anyone a 885 cam on a 4.3? And is it more progressive than the standard 214?

[Engineer1949]

I fitted one as part off a 4.3bv rebuild recently seemed to perk it up nicely but the original was bad so not relly a fair comparison passed emmision o.k.

John

[PH430]

Engineer1949 said:

I fitted one as part off a 4.3bv rebuild recently seemed to perk it up nicely but the original was bad so not relly a fair comparison passed emmision o.k.

John

John,

At what milage did you change your cam? And you changed it into the 885?

[PapaButch]

yeah John did it on my tvr ! Gets an awesome kick around 3-5 - 4k revs ... sounds nice on idle! Really good cam, thoroughly pleased

[PapaButch]

72k mileage

[SILICONEKID345HP]

I have the Stealth cam ,its idles perfect and the power comes in quickly ,there are far more agressive cams but mine is suitable for the road and track .


The Stealth cam seems to be the best compromise for road and track .

[PH430]

SILICONEKID345HP said:

I have the Stealth cam ,its idles perfect and the power comes in quickly ,there are far more agressive cams but mine is suitable for the road and track .


The Stealth cam seems to be the best compromise for road and track .

Thats not a standard 5ltr.
What are the upgrades

[SILICONEKID345HP]

PH430 said:

Thats not a standard 5ltr.
What are the upgrades

One of V8D`s specials .

http://www.tvrmonster.co.uk/modscam.html

Mc1 good idle, excellent drive ability, reasonable bhp.
Mc2 poor ish idle, poor ish driveability good mid range, good bhp.
H404 very poor idle, crap driveability, good mid range, excellent bhp
Stealth very good idle, very good drive ability, ok ish mid range, good bhp.
Piper 270 ok idle good mid range crap bhp
Piper 285 crap idle, poor drive ability, very good mid range, ok bhp, falls off the cam very quickly
Piper 300 crap idle crap drive ok mid range good bhp
Kent 200 very good idle good drive poor every where else
218 good idle good drive good mid range poor bhp
214 ok idle ok drive ok mid range ok bhp
224 poor idle, poor drive, good mid range, good bhp
234 crap idle crap drive, good mid range, excellent bhp,

Edited by SILICONEKID345HP on Sunday 29th March 20:55

[Mr Haribo]

My mate has a 430 and has a H404 the car goes very well ! not a BV either.......
The car came like it from TVR as a special order, I had a stealth cam in mine (4.5L) with stage 3 heads bigger plenum ported inlet
I could not catch him, I went over to it now i can !

[Chuffmeister]

Can you not improve the idea and drivability of the 404 with a decent map and aftermarket ECU?

[Pupp]

Yep, long overlap cams are the devil's work. Certainly don't try and pair one with a turbo

[Chuffmeister]

I have a 218. All other things being equal, what would the likely BHP difference be between that and a Stealth on a 5L? It would be nice to see a real back to back test on these cams with some real life figures.

[A900ss]

Bobby Shaftoe said:

The H218 is a midrange cam, and from the unofficial lift/duration/timing numbers i've got for both the Stealth cams, you likely wouldn't seem much difference at all with the regular Stealth.

If I read the above correctly, are you saying there are two different grinds of Stealth cams? What's the eifference between the two?

FWIW my car has a Stealth and puts out loads of mid range torque and acceptable top end. I was hoping for more top end at a sacrifice of mid range. (But it could also be that my heads need work to help the Stealth....)

Edited by A900ss on Tuesday 31st March 10:44

[Chuffmeister]

Bobby Shaftoe said:

The H218 is a midrange cam, and from the unofficial lift/duration/timing numbers i've got for both the Stealth cams, you likely wouldn't seem much difference at all with the regular Stealth.

There are lots of different hydraulic cam grinds available (around 40) for the Rover V8, but they all fall into 3 or 4 performance groups, and unless you jump up a group (or go from a very knackered cam, to a spanking new one) there's not much to be had in the power stakes.

All the cams in a given group are much of a muchness & the only company that i've seen that do radically different grinds are Kelford with tight LSA's & low exhaust lift, though i've never heard of anyone using one.

Edited by Bobby Shaftoe on Tuesday 31st March 00:37

That's interesting. In the above list of cams, the H218 is promoted as good midrange, poor BHP. Whereas the stealth is good BHP. 'Poor' and 'good' can mean different things to different people, however, from what you're saying, this chart could be a little misleading?

[blitzracing]

Pupp said:

Yep, long overlap cams are the devil's work. Certainly don't try and pair one with a turbo

Or a 14CUX for that matter.

[gmw9666]

Just dropping in from the wedge side.....hi

I've got a 234 cam in my wedge.....and quite frankly drives spot on, I can drive through town not issues a real joy at all speed.......and she goes like s£$t off a stick = 287.6 BHP at 5794 RPM with 281.3 ft lb at 4811 RPM. In my view its all about the set up. Just my 2 cents :-)

Video of rolling road set up = http://s1354.photobucket.com/user/gmw9666/media/IM...

Engine Spec
4441cc
HRC Conrods
234 Cam
Jaguar AFM
Jaguar Injectors
Big Valve - Ported and Polished Head
Standard Inlet Manifold / 38mm with shortened 45mm trumpets
JE 80mm Crank (number 897)
JE 4.5 Pistons
Bore 93.5
Stroke 80mm
NCK 72mm Throttle Body / Plenum
Standard timing chain, cam followers, push rods
Bronze Valve guides & Dual Valve springs
8.5 Head Gasket / 10.619 CR
Mark Adams rebuilt ECU / AFM and rolling road set up by MA
Smooth bore Silicone Elbow and Ram Air Filter

Edited by gmw9666 on Tuesday 31st March 11:37