Being realistic, im sure there isnt anything wrong with your guide.

But even if there is, throwing the head away is crazy? They can easily be changed, i had one done on mine because it slipped down somehow

Cost me £40 with a skim i believe

 

Wish I had the financial luxury of throwing the head away and getting another, but I don't.

 

it'll be alright

 

Hope so as this is turning my hair grey!

Bah it's well annoying living this far away from civilisation

 

Ok,

Fully cleaned up the head, making sure none of the oilways etc were blocked with crap. Cleaned the springs, retainers, rockers, lifters and lapped all the valves in to a nice gastight finish.

Dummy built the engine back up with some old bolts n old headgasket.

Put a disc of good old playdough (yes i've got kids lol) on piston no1 and turned it over a few times by hand.

Took the head back off and no marks were on the playdough so I assume the valve/piston clearance is fine.

Rebuilt the engine fully and topped up the water. It started up straight away as before.

Let it idle for 30secs or so just to check things seemed ok then slowly raised the revs to about 2k. Seemed fine so I upped it to 3k. on the way up it sounded like the worst case of detonation u can imagine, ie about as noisy as a diesel. When it got to 3k though and I held it there it's fine.

So it'll hold steady rpm but doesn't want to run correct under load. Hmm EFI doesn't have a dizzy I can turn lol.

I'm going to have a more thorough look at things again tomorrow. Just wish it was something simple. hmm if nothings obvious then i'll tax the old girl n take her to a garage n check mixture etc.

 

You sure your bottom end isnt knackered?

 

I hope not. I bought the entire lot off a friend who'd broken his FRST and his series 1 ERST. Now the fiesta had lost the will to live and chucked a rod through the block and the series 1 got all gobbled up by tin worm lol.

So briefly, he sold me the EFI head, which looks like it's in gr8 condition ie no wear on lobes or lifters apart from the bent valves on cyl#1, it's inlet etc, a T2 & manifold, his block out of the series 1 (although this is an EFI one), a full FRST wiring loom, OFAB ECU & 165 superchip.
Plus various other bits ie samcos, dumpvalve, radtec intercooler and other goodies.

I already had a T3 on ERST manifold so i've put that on.

Now his series 1 was apparently running somewhere near 250bhp with 5th injector & hybrid turbo etc on this bottom end and i'm assured that it didn't have any probs.

For example the pistons are all very clean with little or no carbon on. The bores are spotless, perfect shine all the way down with no detectable lip where the rings upper reach is.
I know this doesn't rule out the possibilty of worn bearings/shells though but i'd be surprised given the general condition of the rest of it.

I guess I could take the sump off and open a cap or two and check the state of the shells n crank surface.

Ahh well the game continues

 

duno on that mate

What iansoutham could be a possibility, but such a slim one in my opinion. If i could hear it i could probably tell u better what it was, catch 22

Have you compression tested it since you've had it running? If it was the valves meeting the pistons i'd expect them to bend again.

 

Yeah so would I but after running it before and hearing the noises it made I still ran it up and down quite a few times but no marks were evident anywhere after dismantling it again.

Bah getting to the point where i'm gonna rev it to make it break then i'll know for sure somethings fucked! j/k.....well maybe.....

Hmm guess I could record it for you tomorrow.

 

Try it, a recording wont be as good as hearing it in the flesh though

 

hehe i'll see what i can do