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Finally it's official, i'm adding another 4 cyclinders

Tech Talk for Rover owners.

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Post by GRIMACE »

def90 wrote:hey ben, as much as i'd love to comp it one day, i probably won't as don't want to kill it. by the way 40-50k's i'd be swapping to high range before then anyways :twisted: your probably running 4.11's in your fender

the gearing will around the 46:1 with the 49% as i'm only running stock 3.54's CWP's, but then again there is probably a good chance when i have horsies to pay with they will die a sudden death and i'll have to look at 4.11's or a toyo cent conversion in which case i could swap back to 30% if needed
Sam, I wouldn't worry to much about the horsies breaking stuff, you will find that with the auto and the drop in torque you will be less likely to break stuff.
But then again, I have always had an auto and always had the v8s and always break stuff :oops:

p.s. fridge is keeping my beers cold, right next to the lounge chair :armsup:
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Post by cpmurray »

def90 wrote:the gearing will around the 46:1 with the 49% as i'm only running stock 3.54's CWP's, but then again there is probably a good chance when i have horsies to pay with they will die a sudden death and i'll have to look at 4.11's or a toyo cent conversion in which case i could swap back to 30% if needed
I thought that 4.11's were weaker than 3.54 CWP? A friend of mine that does some of the winch comps has recently gone backup to 3.54 from 4.11 because he was sick of breaking them.
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Post by def90 »

cpmurray wrote:
def90 wrote:the gearing will around the 46:1 with the 49% as i'm only running stock 3.54's CWP's, but then again there is probably a good chance when i have horsies to pay with they will die a sudden death and i'll have to look at 4.11's or a toyo cent conversion in which case i could swap back to 30% if needed
I thought that 4.11's were weaker than 3.54 CWP? A friend of mine that does some of the winch comps has recently gone backup to 3.54 from 4.11 because he was sick of breaking them.
i would of thought that ashcroft's and the like would've been miles stronger then stock 3.54's :?

hey grimace good to hear the fridge is doin her job, 'fred' my new 60L is loving all the blondes i give him on a daily basis to entertain before i finish 'em off! you getting your slack ass down with us to rover this w'end!!
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Post by defmec »

the more gears on the crown wheel the smaller they are
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Post by def90 »

ok so its getting closer, motor got dropped in 2day, now just a few weeks to sort all the rest of the bits and pcs.

try my photobucket 1st attempt.... :oops:

http://s325.photobucket.com/albums/k398/def_90/

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Post by defmec »

sits nice and low and doesn't look much bigger than my 2oo td .im jealous
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Post by def90 »

looks a bit empty in there at the moment, but after the injection and everything is bolted up, hopefully i'll still get some space back in there. was a fair bit tighter with the isuzu.
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Post by Dave_S »

It looks so shiny! You'll have to get it dirty fast - either that or paint the car :D
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Post by Aquarangie »

Looks good. I see you're going an auto as well, wise move with the 4.6 (who wants to change gears anyhow :D ).

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Post by nottie »

Dave_S wrote:It looks so shiny! You'll have to get it dirty fast - either that or paint the car :D

Dont worry bout that ;) The rover seals will cake everything in oil once she is running :rofl:
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Post by GRIMACE »

nottie wrote:
Dave_S wrote:It looks so shiny! You'll have to get it dirty fast - either that or paint the car :D

Dont worry bout that ;) The rover seals will cake everything in oil once she is running :rofl:
I hope your taking plenty of notes nottie, stroker block will be at your place in the near future. :D
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Post by ISUZUROVER »

looking great Sam!
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Post by shakes »

:armsup: :armsup: :armsup:
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rover

Post by quaddrive »

so thats a 4.6 crank in a 3.9 block with reduced mains? just the block is not cross bolted so its an earlier block?

Looking good.

Cheers
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Post by def90 »

yep its a early 3.5 block.
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Post by bigbad »

3.5, has it been sleeved to 3.9 bore size?
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Post by Corgie Carrier »

To use the 4.6 crank in a 3.9, what rods do you use?

What other things do you have to change?

I am looking at some way to give my 3.9 a bit more stick, but haven't heard about using a 4.6 crank, what capacity does that give you?

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Post by bigbad »

Corgie Carrier wrote:To use the 4.6 crank in a 3.9, what rods do you use?

What other things do you have to change?

I am looking at some way to give my 3.9 a bit more stick, but haven't heard about using a 4.6 crank, what capacity does that give you?

Neale
use the 4.6 rods and pistons, gives you a 4.6
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Post by def90 »

its a 4.4 stroker kit, but using a ground 4.6 crank, instead of 4.4 - because i wanted a serp belt, gives me abit over 4.3L


ok so question, the temp fuel system we put on was a 2 barrel holley projection system - originally off a 4.4, that turns out can't deliver enough fuel.

we're just about to start pricing other options now, my mechanics looking at a 4 barrel holley system from the states, or a multipoint system.

who's got any suggestions? exp?

fired it up y'day and she's got a schweet rumble!
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Post by HI JACK »

straight gas stop pissing about
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Post by jbell »

Yeh I agree with HI JACK straight LPG. But the 4.6 I put in
my 130 just use's the stock 3.9 injection & goes pritty well.
We are looking at an computor upgrade from JD as well for
a little extra :armsup:

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Post by cloughy »

jbell wrote:Yeh I agree with HI JACK straight LPG. But the 4.6 I put in
my 130 just use's the stock 3.9 injection & goes pritty well.
We are looking at an computor upgrade from JD as well for
a little extra :armsup:

Jeff
Have you run it up on a dyno and found out A/F ratio's yet? :shock:
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Post by def90 »

no gas on the wombat harley, too much stuffing about removing tanks and replacing with those cylinder thingies!! hows the OC going?
1986 - Stage 1 V8 serIII style side ute - gone
1997 - 300 TDI 130 single cab ute - gone
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Post by jbell »

No have'nt dynoed it yet, the nearest 4w dyno is 3hr's away.
Its only a work ute so its ok at this stage. But we always like
a bit more. But lpg will probobly be next.

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Post by cloughy »

jbell wrote:No have'nt dynoed it yet, the nearest 4w dyno is 3hr's away.
Its only a work ute so its ok at this stage. But we always like
a bit more. But lpg will probobly be next.

Jeff
Not talking about getting "a bit more" out of it, I'm talking about your engine living a long healthy life, not run lean for many km's :cry:

You don;t need a 4w dyno, just drop the front shaft and engage the CDL
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Post by nottie »

Steer clear of the holley projection carbs sam as you will have the same problem as running well a holley carb :?

Im with harley mate. Go a Gas research carb.
If not try the 3.9 manifold with maybe aftermarket computer (im shore grimace had 1 around somewhere) with some bigger injectors.
But really you should have just stuck a damn Chev in it :lol:
Gas will come in a bit over what the projection carb an computer will come in at. The projection is pretty much a carb with 4 injectors shoved in the guts of it.

The standerd 3.9 computer and manifold set up will do fine though until you sort a gas kit out. ;)
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Post by def90 »

cheers nottie,

gotta work this one out soonish, but gotta find $$$!
1986 - Stage 1 V8 serIII style side ute - gone
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1986 - 90 defender soft top, bars, buttons and tyres
2000 - TD5 disco 'the boss's rig'
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Post by nottie »

Is a complete 3.9 injection set up on ebay for $150 at the moment.
http://cgi.ebay.com.au/Land-Rover-Disco ... dZViewItem
No computer though. (i do know who has a spare though :lol: )
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Post by def90 »

cheers nottie,

i'm in discusions with my mechanic a the moment to run probably the 3.9 manifold with a haltech computer, get rid of the AFM.

only problem is that he wants it for another month to do the work, as he only does it on the side, not as a dedicated job, to try and save me a little coin.

lucky he needs more landscaping done at his house :armsup:
1986 - Stage 1 V8 serIII style side ute - gone
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Post by GRIMACE »

Unless you like piss fart arsing around with after market computers I would suggest keeping the standard 14CUX. It will be far less hassle and much cheaper.
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