Manky Monkey Motors

Technical Section => General Tech => Topic started by: the coppersmith on March 26, 2018, 06:03:06 PM



Title: MX5 engine woes
Post by: the coppersmith on March 26, 2018, 06:03:06 PM
Not really the engine, just a very hard to remove spark plug! All day trying to loosen 2 plugs. Finally got one loose, covered in rust and muck. The plugs are buried in a chamber, need long reach stuff to get them out and they are the 10mm ones which restricted me to 3/8 drive stuff. Anyway one would not budge, Kept slipping the socket, so I smashed out the ceramic bit, thinking I could get another socket down there but because of all the crap down the hole, nothing. After a while I became fed up, not really enjoying the moment. So I bit the bullet and took the head off. Smashed out the centre of the plug and carefully drilled it out @.5 mm at a time, started with 8 and finally 11.5. Still would not budge Went for 12, nope dare I risk 12.5, well its scrap if I don't. Half way through there was a screaming noise and it picked up and spun out. Job done ! I sweat a bit thinking the worse. I think this rounded off plug has been there since the car was built. Luckily found a 14 x 1 tap and tapped out the holes and no apparent damage is visible. Jobs a good 'un. NEXT ! ;D


Title: Re: MX5 engine woes
Post by: the coppersmith on March 26, 2018, 06:08:56 PM
the offending head


Title: Re: MX5 engine woes
Post by: the coppersmith on March 26, 2018, 06:09:36 PM
The good thing is the bores are perfect


Title: Re: MX5 engine woes
Post by: the coppersmith on March 26, 2018, 06:10:39 PM
 a good plug and one I struggled with, but gave up in the end


Title: Re: MX5 engine woes
Post by: the coppersmith on March 26, 2018, 06:14:01 PM
the remains of the plug  :D


Title: Re: MX5 engine woes
Post by: Manky Monkey on March 26, 2018, 09:26:43 PM
Well done that man! May have taken all day, but not losing your temper with it pays off in the end.
I was trying to fit leather straps to the freshly painted fuel tank for my truck recently. The brackets just refused to lign up with the holes. Out of line just far enough that I couldn't quite get the screws in.
Years ago I would've just bludgeoned them in, tried forcing them in, lost my temper & would've inevitably ended up putting a dirty great gouge in the paint.
Knowing that would be the outcome though & knowing they'd come out of those holes, so must go back in eventually, I refused to get angry with it, (I kept calm by singing to myself as I worked). Took me all afternoon to fit 8 screws, but no paint got scratched & no tools got flung across the garage, to bounce off the wall & damage something else.
Perseverance pays off :)


Title: Re: MX5 engine woes
Post by: Olds on March 28, 2018, 08:32:07 PM

Well done sir. At least now you know the bores are good. :)


Title: Re: MX5 engine woes
Post by: stinkey on March 29, 2018, 08:28:44 AM
A Slow learner Andy ?


Title: Re: MX5 engine woes
Post by: the coppersmith on March 29, 2018, 12:24:38 PM
16 valves to lap in though  :o do it right, do it once, or some such word of wisdom from my past  ;)


Title: Re: MX5 engine woes
Post by: Manky Monkey on March 29, 2018, 02:52:23 PM
:)


Title: Re: MX5 engine woes
Post by: morrag on March 29, 2018, 04:08:45 PM
Worst case scenario Mr C.....helicoils! excellent devices,but you saved the day, so not needed 8) 8) Morrag


Title: Re: MX5 engine woes
Post by: Olds on April 03, 2018, 06:48:02 AM
My Mk 1 Cortina had a plug that wouldn't come out. Took the head off and found it had been welded in, cracking the head ! Bores were knackered as well so I ended up putting a tuned Pinto engine in it instead. Great in a straight line but lethal on wet roundabouts. Seemed like a good idea at the time though.


Title: Re: MX5 engine woes
Post by: the coppersmith on April 05, 2018, 03:14:36 PM
Nice sunny day, even a bit of warmth on my back. Knocked out a few jobs and then put the engine back together and torqued it all down. Forgot where I put the front cover  ??? but its close. So tomorrow is connect gearbox and fiddle it in to the car. I hope.


Title: Re: MX5 engine woes
Post by: minimutly on April 05, 2018, 08:40:22 PM
A work coleague built a locost with this engine, he had to fit an integral/internal clutch slave - corsa I think, four times he had the engine and box in and out...


Title: Re: MX5 engine woes
Post by: the coppersmith on April 06, 2018, 11:47:25 AM
I'm sticking with the original then, mind made up  :D


Title: Re: MX5 engine woes
Post by: minimutly on April 06, 2018, 12:07:27 PM
I don't thinkk he had room.


Title: Re: MX5 engine woes
Post by: the coppersmith on April 06, 2018, 03:06:48 PM
I've pushed on and bolted in the engine and box. I have no idea where this rush of enthusiasm has come from but long may it continue  ;D


Title: Re: MX5 engine woes
Post by: the coppersmith on April 06, 2018, 03:07:35 PM
bit humpy on my own but needs must.


Title: Re: MX5 engine woes
Post by: the coppersmith on April 06, 2018, 03:08:32 PM
Finally, together, hopefully for ever  ;D


Title: Re: MX5 engine woes
Post by: the coppersmith on April 06, 2018, 03:09:12 PM
.