some things gone wrong!!!

[Morrisminormo]

Valve seat recession doesn't just happen in 200 miles!

Hi

I have had the car since February and done about 9000 miles on its original head. I was saying I fitted exhaust 200 miles ago.

Cheers

[bmcecosse]

In all that 9000 miles - how often did you check/reset the gaps?

[Morrisminormo]

Honestly, it got over looked

[bmcecosse]

The remedy is obvious.......gaps must be checked and reset every 3000 miles on unleaded fuel. And set 15 thou on the exhausts!

[Morrisminormo]

I am going to buy a 12G295 unleaded head as the 12g940 seems like too much work with pocketing the block, or sinking the valves to figures I don't know about. I want to know if 80 thou is the right amount to get skimmed off if my head 12g295 if it's the standard thickness. I should of thought it would if been skimmed during the recon but I will take that away when I know.
I am buying it from ESM.

Cheers

[les]

You must have plenty of dosh, why not get the 206 head you were offered virtually the same as the 295, same size valves etc

[bmcecosse]

As above - you must have plenty of money to waste...... There is NO NEED for unleaded, and the 940 is far superior to the 295. I hate to think how much ESM are charging for an 'unleaded' (is it really??) 295 head.... I've already explained how many thou clearance you need for a 940 head - but you say you 'don't know about' - so there is little point telling you how much to skim a 295 head. Budget ~ £80/100 for the skimming - and better hope it doesn't cut into the oil passage to the rockers!

[Morrisminormo]

link to esm

http://morrisminorspares.co.uk/shop/pro ... 679673bc00

hi bmc and les

You may of touched on the subject in my posts, but its a little over my head If I got a 12G940 what would I have to tell the cylinder head services that I am going to use, what to do with my head. I Would love to drop my head off with confidence and tell them exactly what I want them to do. I use my car daily and now I am using my jag xj8 which is costing me £100 a week in fuel. Good old mo only uses £40 so really want to get it sorted for next weekend.

I have been asking a lot of questions about too many heads over the past 2 days but I just wanted to find the best, fastest fix. but I am still no closer today, but what I do know is I want a 12G940.

I have been looking at the options today as wanted to get my car on the road asap, so I rang esm as I thought it would be a quicker fix, but he said he knows nothing about them and its listed as a sprite head. but I know for that price £195 plus VAT I can get a much better head.

I would love a 12g940 head and a alloy inlet but don't want to buy one and wreck it before I fit it If say I know I have to sink valves in 40 thou and use the standard gasket etc, it would be a god send.

there is a good one on ebay, this is the same seller that is selling the 206 head too.

http://www.ebay.co.uk/itm/CYLINDER-HEAD ... 5af8253169

since joining this forum in feb, I have read so much positive info on the 12g940 but also heard reports about needing to do this or that.

I feel checky asking for your knowledge and cant give anything back in return, but if I cant find the info I will have to fit my standard 948 head back on, but as it is off I would like to take advantage of this time.
but what I do know is I want a 12G940. and I need your help to make this possible

[Morrisminormo]

You must have plenty of dosh, why not get the 206 head you were offered virtually the same as the 295, same size valves etc

He wants £200 for it, that's seems a little steep for a unknown condition head

[bmcecosse]

The ESM 295 head requires a 295 to be given in exchange - or pay £100 surcharge.....so £295 really. You will be very safe if you have the 4 exhaust valves sunk into the head by 40 thou - that's exactly what I did. However you must realise this is not a 'standard' conversion - and a 'cylinder head services' (?) place will probably not understand/not want to know about it. It is however a well proven conversion that WORKS - but you do need to know what you are doing...... At least that head is 'fixed price' - so you don't need to wait till an auction ends - and it is open to 'offers'.....although I doubt he will drop significantly. I would ask what the 'remanufacturing' consisted of - new guides? new valves? new springs? Surface skimmed to make it flat? Probably none of the above - but you can ask.......

[Morrisminormo]

I forgot about the surcharge, and yes I haven't a 12g295 to give them, think they would notice if I sent them my 2a629
After all they didn't know they sold them! I had to confirm it was on there webpage before they would look into it......
Sink the exhaust valves 40 thou in the 12g940?

Hope I'm not annoying you too much, I don't want to get on your list

[David W.]

Or try this from our side of the pond. $175 is about 120 GBP. No tax. No exchange. Even with shipping you'll come out better. You'll have to wait a bit longer.
http://www.ebay.com/itm/1275-Cylinder-H ... 89&vxp=mtr

[bmcecosse]

Aye - but no valves etc! At least another £100/£150 for the valves/springs/caps/collets......probably more. And this is going on a 948 engine - so the valves are already on the large size - no need for 'walls' to be cut back etc.
This one seems more reasonable..... http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... ink:top:en

[Morrisminormo]

It looks a good deal and has lots of scope with all them options! But I really do need to get my car on the road soon as possible really as it is my daily driver. I would be out of pocket if I have keep using this jag all the time lol

But I do appreciate your time, thanks Dave.

[bmcecosse]

If you are in such a hurry - I suggest you grind in the valves on your standard head and refit it - there's no point rushing into this. You can easily have the engine back together by midnight!

[Morrisminormo]

If you are in such a hurry - I suggest you grind in the valves on your standard head and refit it - there's no point rushing into this. You can easily have the engine back together by midnight!

My dad could have it done by midnight with me watching

Seriously, I can drop my head off tomorrow and get them to do what they got to do to my head, and put it on Saturday. I would of liked a 12g940 but like you say I'm rushing a little and getting over excited, after all I was going to have a 206, 202, 12g295 oh wait 12g940, or was it a new engine

In a ideal leisurely world I would like to build a 1098 block, 948 crank, 998 pistons, 1098 cam, 12g940 head and them things you mentioned, bearings on the cam.

[les]

In your situation, and as you have mentioned you are unsure of things, I really don't see why you don't put it back to standard until you get more familiar with the other options, you can then take your time picking up the favoured parts without rushing to buy or paying over the odds. The bits will always be out there.

[Morrisminormo]

You are correct Les, I think as I had the head off and the new exhaust fresh in my mind, I thought I would put a better head on and thought I could just get something and put it on but things are not always that easy! I'm glad I never got to carried away today

It would be ideal to come across a head that's came off a 948 and been already done for me I may be in for a wait. Looks like I'm going to have to settle for 37.5 horses to run down my exhaust for the time being

[les]

Type morris minor 948 cylinder head on ebay there are a few there some quite cheap.

[Morrisminormo]

I'm only getting 2 come up @ £160 recon unleaded

You on ebay.co.uk