42 replies to this topic

[1977 Loud_Mini]

Hi all, picked up a 1380cc engine today. The work done so far is. New cam followers, 296 kent camshaft scatter pattern, new vernier timing kit, new piston rings, nearly new Powermax pistons 73.5mm, crank reground and new big end and main shells, new oil pump and valve, i think it has a centre main strap but not 100%.

Are the conrod standard bolts or are they stronger versions. Also think it may have had an electric fuel pump at some point as the mechanical fuel pump is blanked off, is the crank a standard 1275 as i have pictured the markings. Also found some interesting marking on the block face, i'm guessing its the offsets that the bores have been bored out by.

Let me know what you think.
Evan.

[danrock101]

it's got a centre main strap, crank is standard, balanced from what I can tell

[1977 Loud_Mini]

it's got a centre main strap, crank is standard, balanced from what I can tell

Thanks for the help, that's good to here about the centre main strap. How do you know if the crank is balanced then?

[scsracing]

I was watching that one on ebay,i bought the other engine that guy was selling

[danrock101]

it's got a centre main strap, crank is standard, balanced from what I can tell

Thanks for the help, that's good to here about the centre main strap. How do you know if the crank is balanced then?

There's parts of the crank that's been removed

[1977 Loud_Mini]

I was watching that one on ebay,i bought the other engine that guy was selling

Oh rite, the person i bought this off said they had another engine they just sold. What spec was it or was it standard?

[1977 Loud_Mini]

it's got a centre main strap, crank is standard, balanced from what I can tell

Thanks for the help, that's good to here about the centre main strap. How do you know if the crank is balanced then?

There's parts of the crank that's been removed

Ah let's hope it has been balanced then or thats a job i will need to have done.

Edited by 1977 Loud_Mini, 25 September 2010 - 08:42 PM.

[scsracing]

I was watching that one on ebay,i bought the other engine that guy was selling

Oh rite, the person i bought this off said they had another engine they just sold. What spec was it or was it standard?

This was the engine

http://cgi.ebay.co.u...3#ht_692wt_1137

Just going to get one of these for it too soon.

http://www.swiftune....duplex-kit.aspx

Very handy that most of the work has already been done to it

[Southy]

As said the crank is standard, its an early 1275 crank without the filleted radius'. Doesn't look to be balanced as far as I can tell, the bits missing are done as std when cast.

Con rod bolts are std A+ ones. Centre strap is fitted to the block, and looks like a fairly thick one aswell.

Block looks like it hasn't been skimmed at any time due to seeing the B stamped into it still.

[danrock101]

Just read the listing for your 1380 and it does say it's been balanced. You can tell it's has metal machine away from it in the past, if you look in the second picture from the bottom you can see a bit taken away and has x stamped in it.

[1977 Loud_Mini]

As said the crank is standard, its an early 1275 crank without the filleted radius'. Doesn't look to be balanced as far as I can tell, the bits missing are done as std when cast.

Con rod bolts are std A+ ones. Centre strap is fitted to the block, and looks like a fairly thick one aswell.

Block looks like it hasn't been skimmed at any time due to seeing the B stamped into it still.

Thanks for the info, would i need to get the crank balanced then? if so do i need it taken out with pistons, conrods and flywheel attached to get the whole lot balanced?
Also do the conrods need special sockets to torque them up as i need to check they're tightened correctly.

[Southy]

As said the crank is standard, its an early 1275 crank without the filleted radius'. Doesn't look to be balanced as far as I can tell, the bits missing are done as std when cast.

Con rod bolts are std A+ ones. Centre strap is fitted to the block, and looks like a fairly thick one aswell.

Block looks like it hasn't been skimmed at any time due to seeing the B stamped into it still.

Thanks for the info, would i need to get the crank balanced then? if so do i need it taken out with pistons, conrods and flywheel attached to get the whole lot balanced?
Also do the conrods need special sockets to torque them up as i need to check they're tightened correctly.

It wouldn't do any harm to get it balance up no, I would recommend getting all the rotating assembley balanced up, especially if your planning on giving it some stick. A good machine shop will balance the crank on its on and then add the flywheel and then balance that, that way each component is individually balanced.

The AE 20659's are fairly spot on for weighing the same, if the conrods are the original complete set out of the engine then they will be fairly close, not out by more than a couple of grams at most.


No special socket for the conrod bolts, just a 1/2inch multi hex socket is required.

[1977 Loud_Mini]

I was watching that one on ebay,i bought the other engine that guy was selling

Oh rite, the person i bought this off said they had another engine they just sold. What spec was it or was it standard?

This was the engine

http://cgi.ebay.co.u...3#ht_692wt_1137

Just going to get one of these for it too soon.

http://www.swiftune....duplex-kit.aspx

Very handy that most of the work has already been done to it

Yeah your engine and mine has had a fair bit of work and money spent on them. I did see yours on ebay but thought the 1380 would be more suited to what i'm after. Nice twin carbs you got though
By the looks of it the vernier timing kit i have looks like the swiftune one so thats a bonus.

[danrock101]

As said the crank is standard, its an early 1275 crank without the filleted radius'. Doesn't look to be balanced as far as I can tell, the bits missing are done as std when cast.

Con rod bolts are std A+ ones. Centre strap is fitted to the block, and looks like a fairly thick one aswell.

Block looks like it hasn't been skimmed at any time due to seeing the B stamped into it still.

Thanks for the info, would i need to get the crank balanced then? if so do i need it taken out with pistons, conrods and flywheel attached to get the whole lot balanced?
Also do the conrods need special sockets to torque them up as i need to check they're tightened correctly.

It will be worth checking crank endfloat, I used a normal socket on my rods, check the straps are tourqed up too while you're at it, don't know the settings though, 65lb/ft I think it is, but make sure you double check this with somone who knows what they're talking about, no idea on the co-rods

[Southy]

35lb/ft for con rod bolt