4.6 block??

minter · Post by **minter** » Sun Apr 03, 2011 5:10 pm

hi guys wanting some advice,,,

currently running a blown 3.5 rover,, i'm very keen on making more hp/torque etc,, the easiest way for me to do that is buy buying a 4.6 block building bottom end then transferring top half of 3.5 over.

i'm always told the 4.6 is always prone to faults leaky liners etc,, should i be looking at something like this with block having top hat liners, x bolted mains etc

http://cgi.ebay.co.uk/RANGE-ROVER-P38-V ... 43a0fd63e5

will this eliminate the problems prone with these blocks?

i wanna go chevy route eventually but this the best fastest option for now.

your thoughts please,, many thanks.

ChrisJC · Post by **ChrisJC** » Sun Apr 03, 2011 5:51 pm

The top-hat liners certainly cure the symptom of a crack behind the liner. The block remains cracked of course, but that doesn't seem to matter.

Chris.

kiwicar · Post by **kiwicar** » Sun Apr 03, 2011 7:12 pm

£1250 seems a little steep for just the block to me, you can have a reconditioned chevy 350 4 bolt long engine from real steel for £150 more but I supose its not a rover.
best regards
Mike

ChrisJC · Post by **ChrisJC** » Sun Apr 03, 2011 8:47 pm

Turner Engineering are about £1300 I think, and they O-ring the bottom of the new liner.

The cheaper vendors (£800 ish) just stick a wadge of silicone sealant there instead.

Not sure which method this vendor uses.

Chris.

kokkolanpoika · Post by **kokkolanpoika** » Mon Apr 04, 2011 10:24 am

Just wondering is it bossible to bore Turner Engineering block to 96mm bore, if they use O-ring at the bottom?

When my local machine shop in Finland made couple of top hat blocks, i think they only add some glue between the block/liner, not silicone selaer?
And i dont have any proplem + ever hear any bad for other blocks..

V8 developments sell top hat blocks at 995inc vat?

POAH · Post by **POAH** » Mon Apr 04, 2011 11:48 am

kiwicar wrote:£1250 seems a little steep for just the block to me, you can have a reconditioned chevy 350 4 bolt long engine from real steel for £150 more but I supose its not a rover.
best regards
Mike

yeah but look who is selling it lol

Post by **katanaman** » Mon Apr 04, 2011 4:00 pm

FFS it was only a couple of weeks ago he told a forum member the top hat blocks were rubbish and the only thing to do was buy one of his Coscast blocks! I guess he has ran out of them for the moment!!!!!

ChrisJC · Post by **ChrisJC** » Mon Apr 04, 2011 4:20 pm

Not sure it's the same 'entrepreneur'!!

Chris.

Post by **katanaman** » Mon Apr 04, 2011 4:29 pm

You might be right Chris I am not completely sure now you mention it.

Post by **katanaman** » Mon Apr 04, 2011 4:35 pm

In fact you are right, I know who it is now.

ged · Post by **ged** » Mon Apr 04, 2011 5:41 pm

Have you checked out the company name in contact details?

minter · Post by **minter** » Mon Apr 04, 2011 8:47 pm

are these companies just for the work on the block or do they do hole bottom end?

kiwicar · Post by **kiwicar** » Tue Apr 05, 2011 11:02 am

POAH wrote:
kiwicar wrote:£1250 seems a little steep for just the block to me, you can have a reconditioned chevy 350 4 bolt long engine from real steel for £150 more but I supose its not a rover.
best regards
Mike

yeah but look who is selling it lol

In my experience Real Steel are pretty well respected certainly I have had very good service from them and find their prices good. Are you thinking of RPI by any chance??
Best regards
Mike

SuperV8 · Post by **SuperV8** » Tue Apr 05, 2011 3:44 pm

I to had the same idea over a year ago now!

I had a 3.5 supercharged and wanted more... Found a 4.6 on e-bay thought it was worth a gamble. Paid £300 for block bottom end and heads. Had been in a vehicle fire apparently???

Anyway had the block pressure tested and three liners leaked

but I brought it knowing this was a posible. Think it was £800 for top hat liners. I won't get into the new gearbox to handle the extra torque, new diff with a more suitable ratio, new fuel system (pump,injectors) etc,etc...

When boring the new liners they asked what size? So then I started dreaming about going bigger... but had to stop myself getting carried away as funds wouldn't stretch to new pistons and balancing as well, so i'm making do with supercharging my 4.6.

Tom.

minter · Post by **minter** » Tue Apr 05, 2011 7:24 pm

SuperV8 wrote:I to had the same idea over a year ago now!

I had a 3.5 supercharged and wanted more... Found a 4.6 on e-bay thought it was worth a gamble. Paid £300 for block bottom end and heads. Had been in a vehicle fire apparently???

Anyway had the block pressure tested and three liners leaked but I brought it knowing this was a posible. Think it was £800 for top hat liners. I won't get into the new gearbox to handle the extra torque, new diff with a more suitable ratio, new fuel system (pump,injectors) etc,etc...

When boring the new liners they asked what size? So then I started dreaming about going bigger... but had to stop myself getting carried away as funds wouldn't stretch to new pistons and balancing as well, so i'm making do with supercharging my 4.6.

Tom.

hi tom yes i'm very keen on going bigger,, i'm pretty suprised wiv performance now from a 3.5 wiv blower,, have u had a dyno with the 4.6 hp torque?? who dun the work on your block,, deciding which way to go about it?!?