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1275cc frontplate bend
Posted: Fri Aug 05, 2016 8:16 pm
by Fingolfin
All,
I imagine I already know the answer to this question, but I wanted to be certain before painting.
Is this bend supposed to be there, or should the frontplate be perfectly flat (except the upturned ends, of course)? This is off a 1972 Midget-spec 1275cc, if it matters.[frame]

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Re: 1275cc frontplate bend
Posted: Fri Aug 05, 2016 9:04 pm
by les
It doesn't look right to me and my 1098 plate is flat.
Re: 1275cc frontplate bend
Posted: Fri Aug 05, 2016 9:20 pm
by philthehill
The 'A' Series front engine plate should be absolutely flat except for the turned up ends.
Later Midgets had a reinforcing plate attached on the O/S of the plate and which had the dynamo/alternator adjuster stub fixed through it.
The several I have on the shelf are all perfectly flat.
Below is a 1275cc Midget front engine plate with the reinforcing plate which has been shortened to accommodate the late timing cover (CAM4904) with tensioner bulge.[frame]

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Here is a 1275cc Midget front engine plate on your side of the pond and located not too far from you:-
http://www.ebay.co.uk/itm/MG-Midget-Aus ... SwPYZU64Wu
Re: 1275cc frontplate bend
Posted: Fri Aug 05, 2016 10:04 pm
by Fingolfin
As I suspected! Hmm. Looking back through old photos, I don't see that the engine came to me with that bracket/reinforcing plate/stiffener thing, but who knows if it had it to begin with.
It looks as if I have two options: unbend this plate (and use some method of reinforcing it so it doesn't bend again - weld on some angle, maybe?), or replace the plate. Phil, thanks for pointing me to the one on eBay.

Re: 1275cc frontplate bend
Posted: Sat Aug 06, 2016 9:50 am
by Declan_Burns
Here's a photo of the reinforcing plate and also the new timing marks.
Regards
Declan[frame]

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Re: 1275cc frontplate bend
Posted: Sat Aug 06, 2016 4:13 pm
by bmcecosse
You won't need the reinforcing unless expecting severe use of the engine/car? Just hammer it flat. It may have been bent on purpose to pull the engine slightly forward to help clear the steering rack and battery box.
Re: 1275cc frontplate bend
Posted: Sat Aug 06, 2016 6:03 pm
by philthehill
If you hammer it flat you will most likely put a distortion elsewhere in the plate which in all probability will lead to an oil leak between front plate and block.
My advise for what it is worth is replace the front engine plate.
If it has been bent on purpose to clear say the rack you have additional problems to worry about.
There is absolutely no need to bend anything when correctly fitting a 1275cc Midget engine to a Minor.
Phil
Re: 1275cc frontplate bend
Posted: Sat Aug 06, 2016 6:36 pm
by les
I reckon someone dropped the engine at some point, and bent the plate, it doesn't look like an intentional bend. Not easy to flatten, the cover is often distorted without adding another area of ripples!

Re: 1275cc frontplate bend
Posted: Sat Aug 06, 2016 8:52 pm
by bmcecosse
The bend looks to be well away from the cover sealing line. Frankly I would just use it as is. The car may have been in a hard frontal - causing the engine to move forward, but I would have expected the rubber mounts to give way before that plate would bend!
Re: 1275cc frontplate bend
Posted: Sun Aug 07, 2016 10:21 pm
by biomed32uk
I would find a nice friendly engineering shop that will let you borrow thier fly press for half hour, sure you could tweak that out on a sturdy press.
Re: 1275cc frontplate bend
Posted: Mon Aug 08, 2016 12:43 pm
by bmcecosse
A wee heavy hammer and a block of hardwood will fix it if you feel you really MUST.
Re: 1275cc frontplate bend
Posted: Mon Aug 08, 2016 5:36 pm
by Fingolfin
I feel like I may as well try to fix it before I spend money on a replacement - I always prefer to use original parts where I can, after all. An engineer friend suggested putting it in a vice and wiggling it straight with a large adjustable wrench. I may instead be able to have my place of work (a factory) use their press to flatten it.
After that, I'll probably weld a small bit of angle onto the back, to prevent a repeat - and then it can get paint.
