tr7triumph.com

Pretty sure I have just blown my LT77 front bearing. There is a noise, a rattle and hum, that is apparent between shifts.

I have sort of been trying to ignore it, but Mildred's recent post has caused me to face facts.

So the questions is, rebuild or replace with some alternative, like the Supra box?

Opinions welcome,
Owen

I replaced mine with a brand new R380...
/Odd

Just get another LT77 - plentiful supply and often not expensive! Then check your old one out and repair it at your leisure.

It is not a happy day when ones gearbox starts to grind.

Being the offspring of pioneers where repairs to broken wagons were done with whatever materials lying around, we tend to follow that creed. For example, with the rear mainshaft bearing next to the drive shaft flange, we used a sealed ball bearing to better hold in the gearbox oil. We considered placing magnet against the case wall to help trap swarf. We pondered the possibilty of a sort of filter or screen over the oil pump pickup to keep the swarf out of the oil pump. We changed fifth gear to the later one from a fuel injected model to reduce engine speed at highway velocities. And, we thought about a gearbox substitution.

Then we looked at costs. Sure, anything is possible but is it worth it in terms of time spent, performance/fuel economy, and money. In the end, we decided to go with an overhaul and make certain modifications in keeping with our skills and funds available. We're glad we did. However that's just us, it may not be you. The R380 is reputed to be a fine evolution of the LT77. Are they available in your part of the world? They weren't in ours.

We wish you good luck with your upcoming project, please observe good safety practices.

Mildred Hargis

I rebuilt mine using of the shelf (SKF) bearings and new Land Rover parts. It cost €500,- on parts only and that is without the gears as they were fine ...

<center>
<font color="blue"><i>1981 TR7 FHC Sprint (better known as 't Kreng)
1981 TR7 DHC (not very well known yet, but back on the road)
Also a 1980 TR7 DHC, 1980 TR7 DHC FI, 1981 TR7 FHC
http://tr7beans.blogspot.com/</i></font id="blue"></center>

Might be easier to get a Supra box over here, and they are supposed to be pretty strong. On the other hand, I guess you'll need a different bell-housing / gearbox rear mount etc, maybe even a different prop shaft?

I'll be interested to know what you find out, as I guess it's only a matter of time...

Sondar

I have said Supra box and it is a nicer unit than the LT77 in my experience and that's even with my gearbox being a bit worn.

A NZ company called Conversion Components will sell you all the parts but the guy who now runs the place is a jerk in my experience. He sold me a bellhousing with mismatched location studs & only refunded part of the price because I had stretched them trying to make it fit. I could go on but it gives me an ulcer.

************************************************************************

Is 'meat & 2 veg' appropriate rhyming slang for the TR7?