i havnt seen that thread? but yeah sounds like them

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If its yours, customize it !

http://www.ausmini.com/forums/viewtopic.php?t=76897

Be careful buying any painted (all over) heads on eBay, I had a bad experience with one during a rebuild. Supplied by the engine's owner, it looked great until I finally took the silver paint off the face prior to decking it. Then I found a crack went across the face, down the painted chamber and across into the painted exhaust port. After lots of machine work already done, the head went into the skip.
Dodgy eBay sellers...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Yup thats the one Morris 1000. I knew it was too good to be true.

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If its yours, customize it !

If i put this head on my 1380 motor will it perform a little better than a stock head then? Or will it still perform quite well?

Item description

Up for auction is a stage 3 rebuilt 1275 12G940 cylinder head

head has had all engineering done at Donamac Engines

Fully crack & pressure tested, cold dipped

This is a fast road race head that has been highly modified

Ported & Polished, modified combustion chambers all cut to 0.004" to maintain equal combustion chamber volume and equal valve spring lift. Installed are new high flow guides, machined valve spring platforms & new platform shimmes, brand new Kent double row 240lb springs, new stem seals, new bypass fitting. Has a combustion measurement of 21cc, head has been surfaced machined also.

This is a great head if your looking for real POWER!! Would recommend installing a good set of roller rockers and a set of twin SU's as a minimum, great if you have a weber carby. You will also need a good set of high flow extractors to maximise it's performance.

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If its yours, customize it !

it'll be fine on your motor.

You could complain to the guy you bought it off, but he doesn't have any reason (other than repeat sales) to listen to you and do something about it.

I think this is just a case of caveat emptor - everyone has bought something and expected one thing but got something else. It's cost you a little bit of money, but you've learnt something.

With our little old cars, and particularly if you're new to them, you need to find someone you can trust to give you advice. I have a mechanic guru who is now one of my best friends, I had him do a port job on a head about 12 years ago, and I trusted him. He did a good job and got a fair bit of business from me. He's my first point of advice on anything, and all other advice comes second to what he says. That's because he's the one who will help me when things go wrong.

If you had someone like that look at the pictures, he'd have said "nah, that's no good - I'll help you do a better one than that".

You need someone like that, you're in Wagga, so Tim at the Old School Garage is the guy to talk to, or come down here and talk to me, or my guru. Doesn't even have to be someone into minis - my guru does pommy cars, and doesn't have any specific mini knowledge, but has imagination and will share his time & knowledge

I'll step off my soapbox now

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did I tell you that I won a trophy?

Thats the whole point of making a single modification. A single modification makes only a small improvement but when is part of a combintion of modifications as a package it makes an entirely different impact on the performance of the car.

In a lot of cases a single modification can make a car's performance worse without the all the other supportive modifications. A big camshaft, for example, in a stock motor will make it hard to idle and the stock engine wont rev hard enough or high enough for the car to be "on cam".

Similarly, a big head with big valves will breathe better but will not give a real big boost in performance if a small stock carby can't feed it enough fuel.

As others have said - the head you have will probably make the car smoother and easier to drive and it may even be quicker but it wont make it a rocket ship on its own.

Mike

Okay thanks for the advice.

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If its yours, customize it !

I like the people who get a "blueprinted" engine. There is no such beast as the engine was blueprinted a long time before the now owner even came into posession with it. It is all hype on behalf of speed shops cashing in on the gullible. Dad was a mech eng and told many a speed shop in Toowoomba to stop the bullshite and just do what is required of them - not lie and con people out of their hard earned cash.

You add blueprint to an invoice and the shop makes another $1-2000 off you. If they are going to blueprint it, ask them for the drawings and the moulds and watch them hide under the desk.

As for the head, take it back and get him to do it properly as it is not what you ordered. It is simple as that...

Sorry for the rant but hate seeing people getting ripped for naught!!

Hooroo

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Rob Forsyth
Miniot!!

I would be starting a pay-pal dispute ASAP You can always cancel it if you reach an amicable solution, That way he has 750 odd reason to listen to you.

Ive been burned by dodgy mini sellers. Don't give them an inch otherwise they could do it to someone else.

As he advertised it as a ported and polished when neither the inlet or exhausts ports have been touched that's grounds enough to make a pay-pal dispute. Id be willing to bet that those chambers aren't to 0.004" either if you have the patience to measure.

When younger I used to ask what is getting a blueprinted engine about as everyone seemed to drop the whole blueprinted engine thing in conversations!

All I could get out of any one was that all the parts where to original tolerances and specs (which I thought they should be anyway) but sometimes balancing and machining needed to obtain blue print specs.

I think they where all smelling to much Ammonia back then

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1968 Morris Mini Deluxe - members gallery
1970 Morris Cooper S - members gallery
Mini's I grew up with
Slot car couch

Talked to him about it and this was his reply

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If its yours, customize it !