R380 gearbox

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itsallrovernow
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R380 gearbox

Post by itsallrovernow »

I know reverse is below 5th gear on my R380 box, but when engaging it do I need to lift gearstick slightly to engage it without trying to force it in ? Cheers.



unstable load
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Post by unstable load »

No, you don't. It has an internal gate that prevents you slipping into reverse from 5th, but no other lock-out feature.
Cheers,
John

itsallrovernow
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Post by itsallrovernow »

Cheers bud 8-)

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Post by itsallrovernow »

For some reason my box rebuilt by ashcroft tranmissions for my sd1 goes into gear before I start up it goes in no probs, but when I start up it won't go into gear full stop! Do these boxes need to warm up first before I back out of my drive? Many thanks.

sidecar
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Post by sidecar »

Sounds like the clutch is not working properly, with the engine switched off and the car in gear can it be rolled along the ground when the clutch is pressed?

itsallrovernow
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Post by itsallrovernow »

I think it might be the pivot post, I changed the original for my shorter sd1 post and that's probably why getting a gear is such a struggle?

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Post by sidecar »

If you have access to a welder then do yourself a favour, fill in the hole in the 'ball' on the end of the pivot post with weld then grind and polish the ball so its nice and smooth. It is the sharp corners of the blind hole that dig through the fork arm when the clutch pressed.

The idea of the hole might be to hold grease but it does more harm than good!

itsallrovernow
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Post by itsallrovernow »

The pivot post worked fine on my lt77 box and after speaking with Dave at ash trans we both think I should of left longer post in? So box out, groan, to sort it! :(

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Post by JP. »

Had the same issue. R380 Box rebuild by TM transmissions.
Appeared to be a bent primary axle.

No warranty as it could be my fault as it could be happened during mating it back to the engine...
'73 Ford Capri. 3.5 RV8, Magnacharger 110 Supercharger, Merlin F85 Heads, Water/Methanol Injected
'73 Ford F250, 6.7ltr V8
Building a GT40 mk2

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Post by Coops »

the v8 uses the longer clutch arm pivot,
short clutch arm pivot is 2.6 sd1 etc, ive been playing with these recently myself for my twin plate clutch,
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Ian Anderson
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Post by Ian Anderson »

I would bet clutch not releasing or the spigot bearing or hole is not deep enough and so the input shaft will not release from the crank

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Post by DaveEFI »

Does the 380 have synchro on reverse? If not, a check for a dragging clutch is if it crunches going into reverse.
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itsallrovernow
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Post by itsallrovernow »

I'll let you all know when I drop the box over the bank hol 8-)

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Post by itsallrovernow »

Before I take hammer to my sd1 and I've got hammer in my hand as we speak,why is clutch slave cylinder not fitting onto ppushrod ? Cylinder is brand new! Is it because I've fitted longer pivot post? What the f##k is going on with this heap of shite?!!!!!!!!!!!!!

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Post by itsallrovernow »

Right. Having calmed down now, if I refit my standard sd1 v8 pivot post and can a use a shorter release bearing, would that work? And, what is meant by clutch drag, and how do I fix that? Thanks.

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