4.4 rv8 build thread (Doc evil need not post)

[fett]

POAH, what do you think about the turners one from kent cams. it says it doesnt need mods but thats 0.43=10.91 mm and the kent cam is 11.2

 

[POAH]

like I said its very very mild - not one I would consider for my 3.9

 

[fett]

yeah but is it too much lift for my standard springs etc?

an extra 20 horses will take me to 220+ what my compression has gained me so happy with that so long as it keeps the standard power from idle where you want it in a rrc

 

[POAH]

lift is 0.09" more than you should go on standard springs.

 

[fett]

and thats mild? what PITA!

 

[fett]

so what about the crow one then?


---------------------------CROW COMPUTER CARD----------------------------
| PART NUMBER 37776 Date 29-MAR-04 |
| Cam type: Hydraulic type Profile MIN LIFTER DIA.744 |
| ----------------------------------------------------------------------|
| Advance Ground on Cam: 2 Lobe separation: 112 |
| .050 VALVE TIMING |
| Inlet opens: -8 BTDC Closes: 32 ABDC .050 Duration: 204 |
| Exhaust Opens: 41 BBDC Closes: -7 ATDC .050 Duration: 214 |
| ADVERTISED VALVE TIMING |
| Inlet opens: 24 BTDC Closes: 64 ABDC ADV Duration: 268 |
| Exhaust Opens: 73 BBDC Closes: 25 ATDC ADV Duration: 278 |
| Inlet lobe lift at TDC on the over lap:.036 |
| ----------------------------------------------------------------------|
| Valve lift Inlet: .4065 Inlet Rocker Ratio: 1.50 |
| Valve lift Exhaust: .4170 Exhaust Rocker Ratio: 1.50

 

[POAH]

and thats mild? what PITA!

its not just about the lift

 

[POAH]

that 37776 don't exist lol

so what about the crow one then?


---------------------------CROW COMPUTER CARD----------------------------
| PART NUMBER 37776 Date 29-MAR-04 |
| Cam type: Hydraulic type Profile MIN LIFTER DIA.744 |
| ----------------------------------------------------------------------|
| Advance Ground on Cam: 2 Lobe separation: 112 |
| .050 VALVE TIMING |
| Inlet opens: -8 BTDC Closes: 32 ABDC .050 Duration: 204 |
| Exhaust Opens: 41 BBDC Closes: -7 ATDC .050 Duration: 214 |
| ADVERTISED VALVE TIMING |
| Inlet opens: 24 BTDC Closes: 64 ABDC ADV Duration: 268 |
| Exhaust Opens: 73 BBDC Closes: 25 ATDC ADV Duration: 278 |
| Inlet lobe lift at TDC on the over lap:.036 |
| ----------------------------------------------------------------------|
| Valve lift Inlet: .4065 Inlet Rocker Ratio: 1.50 |
| Valve lift Exhaust: .4170 Exhaust Rocker Ratio: 1.50

 

[fett]

it does lol, I seen it on the site:

http://www.crowcams.com.au/media/catalogues/29.0 Range Rover.pdf

 

[fett]

me wants this on my Easter list too

Rollmaster CS7000 timing gear set

 

[POAH]

the 50229 will give better low-medium torque compared to the 37776 according to Crowers own info. The 50229 is one of the cams I would consider for my 3.9 auto along with the real steel.

it does lol, I seen it on the site:

http://www.crowcams.com.au/media/catalogues/29.0 Range Rover.pdf

 

[fett]

Thanks POAH, thing is I dont really want more low end torque than standard- do you not think the 285 ftlbs at 2500 rpm is enough?

I would have thought that the place I needed it was mid range to top for overtaking and the like? I always thought my 3.9 (I know not my current car or engine) could have used that more.

it says the power starts at 1800 rpm on the 777 cam, do you reckon its got none before that then or is it a nice flat curve of peak torque from 1800 rpm up to 4 odd k?

 

[fett]

correct me if am wrong but the lift on that crow cam is below the max for the standard springs? sounds good!

 

[POAH]

got to remember than on standard heads and your square engine it won't rev as well as a 3.5 would. power is still going to be over by 5000rpm probably so having a cam that will let you make power at 5500 but not have the heads to flow the air is pointless. pretty much all the aftermarket cams will give more power beyond the standard peak rpm. standard power will drop off after 4200rpm so by fitting a different cam, better flowing manifold and exhaust you will get a better power band.

 

[fett]

ive got the headers and the cam (if I buy it) but the inlet on these is **** and known for not really being tunable

looking at this page on the crow site http://www.crowcams.com.au/media/catalogues/29.0 Range Rover.pdf I am wondering if the standard p76 (not the rrc one the other site sugges for rrc 4.4 fitment )cam is the way to go, as tbh I have as much power as I need and the band looks good for range rover use. I have asked him what the hp gain will be with the other cams so we shall see.

out of interest what real steel cam are you talking about, as when I spoke to them he said all but the 1 standard rv8 cam (p5 one) would require mods tot he engine to fit and push the power band up the rev range to far for a rrc to use.

what are you putting your 3.9 in mate?

 

[POAH]

not sure why they would say that. its the RS cyclone I was looking at but the crower 50229 gets good reviews too.

cam would be pretty good move in the 4.4 to make a bit more further up the rev range


BTW I'm getting crow and crower mixed up hence why I thought the part number never existed lol

 

[fett]

I did wonder what that 5299 cam was too lol.

is crower US?

thing is if its not s reavvy engine, and its in a rrc used offroad as well as highway do I want to take the power higher up the rev range?

I just want to make best use of my increased compression really, thats why I was thinking p5 cam as they run 10.5:1, wonder where the power starts on the standard p5?

 

[POAH]

pretty much all of the cams we are discussing are good for the engine in a RR. they will give a wider power band compared to a standard engine.

 

[fett]

ok so after some more digging I am thinking of the second one here:

CAMTECH CAMS -  Rover. Range Rover  & V8 3.5-4.6 Ltr 1986 - On Camshafts & Components

what do you guys think and are this brand any good?

Thanks

 

[discomark10]

The 2nd one down best bet as rest might need piston work.. never herd of them personally