Engine and Box

bazbiker · Post by **bazbiker** » Tue Sep 07, 10 2:40 pm

I have a few niggles with my engine and gearbox!

Nothing to big with the engine just some oil and watter leaks from various places (gasket kit required) and a bolt broken off flush for one of the rocker covers.

But the gearbox is slipping from 2000 to 3000 rpm in top gear.

So i am wondering if i would be better off (cheaper) looking for an already overhauled engine and gearbox (with more horse power) and do a straight swap out,
or just get my lump out and give the whole thing an overhaul and fit a bigger carb and inlet while I'm at it. But that still leaves me with my problem gearbox!
Is there an overhaul kit available for these auto boxes or will it require a specialist auto box reconditioning company to sort it out for me (I'm not up on auto boxes but I'm sure it cant be that hard, unless you require specialist tooling??)

Any help or advice welcome

Or indeed if anyone has a complete engine and box they are looking to sell

Anonymous · Post by **Anonymous** » Tue Sep 07, 10 2:53 pm

My personal opinion is hook the engine out and rebuild it yourself. Providing it doesnt need any machining it will be relatively inexpensive, easy to do and very rewarding. I built my engine with the exception of putting the inlet n carbs on and throughly enjoyed it. The box is a different matter so that needs to go to Dunc really as he is nearest to you and obviously does them with his hands tied behind his back.

Have a go mate, Im sure you will enjoy putting a bit of 'you' into the car.

bazbiker · Post by **bazbiker** » Tue Sep 07, 10 3:31 pm

Yea i have done everything on the car myself so far even down to painting it with my mate.

Stripping and rebuilding the engine is no problem I've done loads in the past from the smallest two stroke engines right through to some of the biggest ship engines in the world (no 318 V8's yet tho), and a bit of skimming or honing wouldn't be a problem as i have access to a milling machine too! Its just down to time and cash really as i have three other projects on the go and am trying to get some cash together to buy a new toy

I have worked on a few gearboxes over the years too (mostly big ones!) but never really done anything on an auto box, i don't mind having a go but i don't want to be left with something that i have made worse and is now unrepairable, if that is possible??

Dave999 · Post by **Dave999** » Tue Sep 07, 10 4:07 pm

did you get that manual off ebay??

it should have the full stripdown checking and rebuild info for the 904 box (yours) 2 versions of the borgwarner 35 and a 727
obviollsy get the right one as they refer to them as Torquflite A B C and D

they look bloody complicated to me but standard rebuilds seem to be undertaken by quite few in OZ and i guess here also

if you can measure check clearances and follow the book i think its eminently possible (you obvioulsy can by the statements above)
and there should be a fair old number of these boxes about.

or keep an eye out for a small block 904 of similar vintage
and rebuild yours at your liesure

I haven't got a clue about them but there are pleanty here who do

the 318 is well supported here, USA and Aus

Hi comp flat top pistons can be had for 15 bucks US.

a number of UK suppliers will do piston and ring kits
generic .904 diameter Hydrualic lifters fit
bearings etc

Real Steel definitly cover the 318 and so will many of the others.

the only real difference between yours and a US one will be the oil filter set up and the fact you got slightly higher CR and little or no emisions crap to deal with.

US or aussie 4bbl inlet will fit

you current carb will be a ball and ball designed carter copied Email Australia LtdPty made under licence 2 barrel i,e a BBD (Ball&Ball Dual as oppsoed to a BBS (single)) any old carb off an 80s jeep will work if you swap in your throttle disks rods and jets

could always try a weber 38 Dgas Dges or a holley 500 if you want to stay 2 barrel.

your Dizzy will be bosch or lucas copy of a mopar small block Dizzy the electronic pickup is the same as the US but the vaccum can is not
either will fit your block

Dave

Dave-R · Post by **Dave-R** » Tue Sep 07, 10 4:39 pm

First time you rebuild a box you think it is going to be a nightmare. But actually they are quite easy to rebuild as long as you take your time. No specialist tools required although one or two home made tools can make it easier. An air compressor can help to test things as you go but I rebuilt mine a couple of times without one.

But then again, Dunc needs to pay for that new Bentley of his.

Below is what you find in a transmission. As you can see it brakes down into sections. Each section is re-built as a unit. It is just seals and clutch plates. This is a 727 but your box is almost the same. You don't have that funny tailshaft housing and overdrive unit either.

bazbiker · Post by **bazbiker** » Tue Sep 07, 10 6:09 pm

Cheers guys i think i will just break it down over the winter and overhaul the lot and maybe do some upgrading to the engine while im at it!

Plus i can get the engine bay painted while im at it

watch this space for more advice needed tho

Cannonball · Post by **Cannonball** » Sat Sep 11, 10 2:30 am

Dave wrote:First time you rebuild a box you think it is going to be a nightmare. But actually they are quite easy to rebuild as long as you take your time. No specialist tools required although one or two home made tools can make it easier. An air compressor can help to test things as you go but I rebuilt mine a couple of times without one.

But then again, Dunc needs to pay for that new Bentley of his.

Below is what you find in a transmission. As you can see it brakes down into sections. Each section is re-built as a unit. It is just seals and clutch plates. This is a 727 but your box is almost the same. You don't have that funny tailshaft housing and overdrive unit either.

you twat dave,