Big bang, then a bad misfire.

**stribo** · Tuesday 15th April 2014, 07:59

Driving to work today, just got onto a dual carriageway and put my foot down, next thing, there's a big bang, something flies out the back of the car, and it misfires like a pig, managed to limp to work, open the bonnet to find the spark plug cover smashed, and a spark plug missing. Tried one of the others in it, and it won't do up, so it's stripped the thread.Bugger, looks like I need a new head.

**volvokid** · Tuesday 15th April 2014, 08:02

How the hell does that happen. Bummer lad

**stephenevans99** · Tuesday 15th April 2014, 08:05

Not good mate....was this the R or the T5?

Scratch that....just seen which section it's in

**V70 Graham** · Tuesday 15th April 2014, 08:17

Sorry to hear this Steve, hopefully fairly easily/cheaply sorted

**M-R-P** · Tuesday 15th April 2014, 08:18

Mum's old Vectra did the same thing but we were able to refit the plug. I'm guessing all the extra boost must've stripped the thread.

What's the plan then? ME7 head with VVT delete?

**FIREBOLT** · Tuesday 15th April 2014, 08:19

How about getting the thread Helicoiled? They always advertise spark plug hole thread repair without removing the head.

**stribo** · Tuesday 15th April 2014, 08:35

Originally Posted by M-R-P

Mum's old Vectra did the same thing but we were able to refit the plug. I'm guessing all the extra boost must've stripped the thread.

What's the plan then? ME7 head with VVT delete?

I'm not sure if there would be much benefit.

Originally Posted by FIREBOLT

How about getting the thread Helicoiled? They always advertise spark plug hole thread repair without removing the head.

It's something I'll have to discuss with the garage.

**M-R-P** · Tuesday 15th April 2014, 08:39

Good opportunity to slap NA cams in there too

**claymore** · Tuesday 15th April 2014, 09:00

ME7 head is much better flowing and has thinner valve stems, so is quite a good upgrade.

**merc85** · Tuesday 15th April 2014, 09:58

Originally Posted by volvokid

How the hell does that happen. Bummer lad

usually by someone not doing the plugs up tight enough, and or to tight stripping the thread

**merc85** · Tuesday 15th April 2014, 09:59

Originally Posted by claymore

ME7 head is much better flowing and has thinner valve stems, so is quite a good upgrade.

a chance to get one and port it then

What happened to the spark plug lead? did it push that through the cover?

**stribo** · Tuesday 15th April 2014, 10:04

Originally Posted by merc85

usually by someone not doing the plugs up tight enough, and or to tight stripping the thread

The plugs have been in for a year or so, surely if that was the case it would have gone before now.

**c70geoff** · Tuesday 15th April 2014, 10:06

Ouch dude I feel your pain hope it's not off the road long or maybe I do to catch up on our little mod war

**stribo** · Tuesday 15th April 2014, 10:14

Originally Posted by c70geoff

Ouch dude I feel your pain hope it's not off the road long or maybe I do to catch up on our little mod war

The mod war's off, you cheat.

**merc85** · Tuesday 15th April 2014, 10:26

Originally Posted by stribo

The plugs have been in for a year or so, surely if that was the case it would have gone before now.

No not at all, probably not done up tight enough or cross threaded. a years driving has worked the worn thread and pop.

**oblark** · Tuesday 15th April 2014, 10:36

http://www.ebay.co.uk/itm/VOLVO-2-5-...2#ht_720wt_904

Any good.

**M-R-P** · Tuesday 15th April 2014, 10:39

A 2.5 T5 head ay? don't see many 2.5 T5s.

Must be a special edition

**jamesy12345** · Tuesday 15th April 2014, 10:40

Bugger indeed

I sold my old head to Shem(tek) if you do need one, might be still available. Just a 4.4 one AFAIK

**ExternalError** · Tuesday 15th April 2014, 10:48

Originally Posted by M-R-P

A 2.5 T5 head ay? don't see many 2.5 T5s.

Must be a special edition

the s40 t5 and c30 t5 are 2.5 t5 as they have the same engine the focus st has

I'm not 100% but I dont think it will fit as the engine is smaller than the 2.3/2.4 engine for a me7 head you want a early 2.3 me7 or a 2.4 me7

Also sorry to hear your troubles hope its not much of a fix to get it back on the road

**oblark** · Tuesday 15th April 2014, 10:55

Originally Posted by ExternalError

the s40 t5 and c30 t5 are 2.5 t5 as they have the same engine the focus st has

I'm not 100% but I dont think it will fit as the engine is smaller than the 2.3/2.4 engine for a me7 head you want a early 2.3 me7 or a 2.4 me7

Also sorry to hear your troubles hope its not much of a fix to get it back on the road

It says it fit a 97 onwards so that rules out the focus engine.