Torque Impulse

**Maggot4x4** · 28th March 2009, 11:05 AM

Originally Posted by slug_burner

How about an auto? I expect that the TC will take the TI before it gets into the box.

Ask JC about this

**Vern** · 28th March 2009, 11:21 AM

Originally Posted by Maggot4x4

If you drive properly, there is nothing wrong with the lifespan of an LT85 behind a 4BD1. Just don't go towing heavy loads up hills in 5th

Thats the thing, Garry tows heavy stuff a fair bit of the time

**Maggot4x4** · 28th March 2009, 11:53 AM

Originally Posted by Vern

Thats the thing, Garry tows heavy stuff a fair bit of the time

Yeah, but the important part was "in 5th"

**Bush65** · 28th March 2009, 07:07 PM

Some recent experience in the USA has found that a heavier flywheel improves the smoothness of the 4BD1 - some have used 2 flywheels as a way around gearbox conversions to the Isuzu flywheel housing.

I have mine out at the moment and intend to look at the practicality of increasing the flywheel weight.

The very similar Cummins 4BT has a much heavier flywheel (and pulley on the front).

**garryseries3** · 28th March 2009, 09:47 PM

Originally Posted by Bush65

Some recent experience in the USA has found that a heavier flywheel improves the smoothness of the 4BD1 - some have used 2 flywheels as a way around gearbox conversions to the Isuzu flywheel housing.

I have mine out at the moment and intend to look at the practicality of increasing the flywheel weight.

The very similar Cummins 4BT has a much heavier flywheel (and pulley on the front).

John let us know how you go I could live with the shortcomings of no fifth with a LT95 but seeing I am not there yet with one would like to explore options.
kindest regards
Garry

**C H T** · 28th March 2009, 09:59 PM

Gary

Use an R380/1.2:1 LT230 and you will be very happy. Mine has now done over 65000ks since the conversion - including 4 major trips to central Australia - just got in from the Eyre Peninsula/eastern Flinders/bottom end of the Strezlecki/camerons Corner/bullo Downs etc. Hundreds of kays of soft going nil problems.

PM me your phone number and I will go over all the details of converting my 300TDi 110 to 4BD1T/R380.

Christopher

**rijidij** · 29th March 2009, 09:22 AM

Originally Posted by garrycol

Just put in a heavier flywheel - and I am not sure the LT95 eventually destructs - there are plenty still running around behind 3.9 Isuzus.

Garry

I think Dougal has been toying with this idea too (heavier flywheel)

Murray

**rovercare** · 29th March 2009, 09:44 AM

Originally Posted by C H T

Gary

Use an R380/1.2:1 LT230 and you will be very happy. Mine has now done over 65000ks since the conversion - including 4 major trips to central Australia - just got in from the Eyre Peninsula/eastern Flinders/bottom end of the Strezlecki/camerons Corner/bullo Downs etc. Hundreds of kays of soft going nil problems.

PM me your phone number and I will go over all the details of converting my 300TDi 110 to 4BD1T/R380.

Christopher

How about a detailed write up posted here somewhere, for everyone to see

**rar110** · 29th March 2009, 01:54 PM

I have had an LT85 and currently drive with a LT95. I would go for a 5 speed.

I know where you can get a LT95 bell housing and possibly a 4BD1T that had a Garrett manifold similar profile to the one fitted to the army 6x6 (except they have IHI turbo bolt pattern).

**justinc** · 29th March 2009, 04:19 PM

Having rebuilt LT85's and LT95's, I am sticking with my LT95 . The gearing with 33's and 1:1 high range and 3.54 diffs is perfect, how fast do you want to go??? I just towed 2 tons back from the east coast and had to keep backing off on the flet because I get a nudge in the ribs when I get over 110km/hr

Around town it is fine, I get 11 to 12 l/100 city and 15/100 worst case towing 'aggressively'.

With a taper roller bearing T/C conversion the LT95 is the best prospect for longevity and strength IMHO.

JC

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