4.6 rv8 retaining plate

capriandyb1 · Post by **capriandyb1** » Sat Sep 10, 2016 2:48 pm

Hi guys iv got a crower 50232 cam ordered for my 4.6 block,im running the 3.9 front cover and dizzy.my question is.can I run the cam without the retaining plate ???
I have read that you can't use the half moon retaining plate that's on the 4.6 as standard with the dizzy gearing and v8 tuners and real steel say the full moon plate is no longer available

Any help would be great

sidecar · Post by **sidecar** » Sat Sep 10, 2016 3:22 pm

If you are running a dizzy driven oil pump then yes you could get away without the retaining plate as it is the load that the oil pump puts on the dizzy that stops the cam moving forward. Having said that I run a plate on my 4.6 even though I have an old style pump. If you are running a crank driven pump then you must use the retainer plate.

capriandyb1 · Post by **capriandyb1** » Sat Sep 10, 2016 3:28 pm

Thanks,are you running full moon or half moon plate??....yeah its the old style pump

sidecar · Post by **sidecar** » Sat Sep 10, 2016 4:59 pm

I'm running a full circle retaining plate. I'm also running vernier timing gear, the bolts that hold the plate in plate foulded the cam sprocket so I carefully ground down the head of each bolt, from memory they ended up pretty thin, maybe 3mm thick! You could counter sink the plate and use counter sink screws with some thread lock.

DEVONMAN · Post by **DEVONMAN** » Sat Sep 10, 2016 5:02 pm

The half moon retainer is used with a non dizzy type camshaft whereas the full moon type is used with a dizzy type camshaft. If you buy an aftermarket camshaft for a dizzy application, it will need to have been machined to allow installation of the retainer plate if you want to fit one.

capriandyb1 · Post by **capriandyb1** » Sat Sep 10, 2016 8:13 pm

OK thanks for clearing that up....I'll run it without retaining plate as said real steel and v8tuners no longer do them......they are the main ones I know that did the circle plate

Post by **Coops** » Sat Sep 10, 2016 11:34 pm

I run the full cam plate and Vernier gears and didn't have to grind the bolts down,
took a while to find the correct Vernier gear set to work, and its a kent cams set that clears just for future reference

benjai · Post by **benjai** » Sun Sep 11, 2016 8:13 am

Rimmer Bros still list both full circle
"Cam Retaining Collar" ERR5926
And the part circle type
"Camshaft Thrust Plate" ERR2609

I don't know if they still stock them, but I'd assume so...

FWIW, I'm running the same gear as Sidecarbod, and countersunk the bolts (I also made my own plate, because I'm tight)... If you make your own, be aware that the mounting holes are not on a diameter, they are offset, so the plate only fits one way. It's impossible to fit it the wrong way if you buy one (because the second hole won't line up) but if you machine one and assume the holes are on a diameter, it won't fit (ask me how I know).

Blown v8 · Post by **Blown v8** » Sun Sep 11, 2016 2:14 pm

Brand new,
£20 posted

capriandyb1 · Post by **capriandyb1** » Sun Sep 11, 2016 7:47 pm

Blown v8 wrote:Brand new,
£20 posted

Pm sent

BISH V8 · Post by **BISH V8** » Sun Sep 11, 2016 7:56 pm

benjai wrote:Rimmer Bros still list both full circle
"Cam Retaining Collar" ERR5926
And the part circle type
"Camshaft Thrust Plate" ERR2609

I don't know if they still stock them, but I'd assume so...

FWIW, I'm running the same gear as Sidecarbod, and countersunk the bolts (I also made my own plate, because I'm tight)... If you make your own, be aware that the mounting holes are not on a diameter, they are offset, so the plate only fits one way. It's impossible to fit it the wrong way if you buy one (because the second hole won't line up) but if you machine one and assume the holes are on a diameter, it won't fit (ask me how I know).

Can I ask what size are the bolts that fit the cam plate

SimpleSimon · Post by **SimpleSimon** » Mon Sep 12, 2016 5:21 pm

Coops wrote:I run the full cam plate and Vernier gears and didn't have to grind the bolts down,
took a while to find the correct Vernier gear set to work, and its a kent cams set that clears just for future reference

Tony the early KC verniers didnt clear the bolts or plate (Its why TVR deleted the TP on some builds inc mine that came fitted with the KC venier in the mid 90's) but the later one's do these are the ones we must both be using now

side by side they are different more beef in the earlier unit

benjai · Post by **benjai** » Mon Sep 12, 2016 8:05 pm

BISH V8 wrote: Can I ask what size are the bolts that fit the cam plate

Can't remember for certian, but Rimmers say they are 5/16 UNC x 3/4 (as a hex head without countersinking). I expect in this case, 5/16 UNC x 1/2 CSK would do, but I expect I bought them at 3/4 long and then cut them down for maximum thread engagement...

capriandyb1 · Post by **capriandyb1** » Tue Sep 13, 2016 10:02 am

Iv bought the one off blown v8,the countersinking look to be a good idea as I'm using duplex gears

jrv8 · Post by **jrv8** » Thu Sep 15, 2016 9:08 am

Hi Guys,
I have about a dozen of these full circle plates here. If anyone is interested, drop me a message.

Regards
Jim
jrv8.co.uk