another 4.6 question

ian.stewart · Post by **ian.stewart** » Sun Dec 21, 2008 10:53 pm

How much longer is a serp engine than a P6 engine. suppose a datum is needed, No1 piston cylinder head front face to the front of the serp bottom pulley

RoverP6B · Post by **RoverP6B** » Mon Dec 22, 2008 1:32 am

Hello Ian,

I have a 4.6 residing in my P6B.

The engine is fitted with an SD1 timing cover while all other ancillaries are of P6 origin.

Everything fits just the same, LOA is the same, width the same, no problems were encountered at all.

A spacer is used with the pulley on the cranksaft nose, and the front section of the P6 sump needed to be "relieved" to accomodate the stoke of the crank, but apart from that.....

Ron.

ian.stewart · Post by **ian.stewart** » Mon Dec 22, 2008 9:35 am

Can I run a serp type cover and pump with a P6 bottom pulley as I dont need a dissy, or will I need to change my cam? or will the waterpump get in the way ,
I think I would prefer to run a serp front, if possible,

ChrisJC · Post by **ChrisJC** » Mon Dec 22, 2008 1:11 pm

Can't you run a GEMS cover?, they're very short.

Chris.

ian.stewart · Post by **ian.stewart** » Mon Dec 22, 2008 6:30 pm

ChrisJC wrote:Can't you run a GEMS cover?, they're very short.

Chris.

Dont know thats why I am asking silly questions,

ChrisJC · Post by **ChrisJC** » Mon Dec 22, 2008 9:05 pm

I can measure if you like, but for starters here's the difference between a GEMS and Range Rover EFi timing cover.

Chris.

ian.stewart · Post by **ian.stewart** » Mon Dec 22, 2008 9:50 pm

Well, that answers that, seems to be about as short as my hybred front end.
Cheers mate

4.6 MGBegun · Post by **4.6 MGBegun** » Fri Dec 26, 2008 4:17 pm

The front cover on my GEMS 4.6 measures just 5 inches from the block face to the front of the crank pulley.
I have a photo that I'll post if someone can tell me how.

ian.stewart · Post by **ian.stewart** » Fri Dec 26, 2008 5:13 pm

Thanks for that, Ill be out with a measure later,
Just researching the best way to build a BULLIT PROOF bottom end, looking at a set of Crowers at the moment,

ChrisJC · Post by **ChrisJC** » Fri Dec 26, 2008 7:12 pm

It's about 5.5" to the front of the water pump pulley:

Chris.

4.6 MGBegun · Post by **4.6 MGBegun** » Sat Dec 27, 2008 2:13 am

Using an edge graduated ruler, I measure 5 inches from the block face to the front edge of the crankshaft pully. Maybe 5 and 1/32.

This is on a US Spec 1996 GEMS 4.6

The V8 Owners Forum -

another 4.6 question

another 4.6 question

4.6 GEMS cover dimensions