crack in front manifold

crack in front manifold

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Discussion

ochten

Original Poster:

238 posts

163 months

Wednesday 22nd July
quotequote all


have a large crack in the front manifold. can i replace it with the engine in place?

is welding ok or should i buy a new one

nawarne

2,879 posts

220 months

Wednesday 29th July
quotequote all
Jan, just seen this post.

For me, I'd say do a weld repair....the crack is barely visible.
Would be a fairly quick and easy thing to do? Remember to protect the ECU.

Nick

quint22cp

16 posts

31 months

Wednesday 29th July
quotequote all
I can say from very recent experience that on a early Tuscan it isn't possible to remove just the front manifold. The rear one prevents its removal. To remove both manifolds with the engine in situ is a nightmare I gave up as it was too difficult to access the manifold bolts.

ochten

Original Poster:

238 posts

163 months

Sunday 6th September
quotequote all
Welded the Manifold. Seems to be Ok now but during the MOT last week if failed.
Small leaks before the Cat makes the Co2 sensor/ECU very unhappy! Bought a 2 tons Crane to remove the Engine (again , is the 3rd time now)

PhilF329

140 posts

198 months

Sunday 6th September
quotequote all
What a shame - hopefully third time lucky!

mk1fan

9,885 posts

185 months

Monday 7th September
quotequote all
I was given a tip to cut down an allen key to access the rear cap heads screws. Faffy job though.

While the manifolds are off and repaired, how about ceramic coating?

glow worm

4,488 posts

187 months

Monday 7th September
quotequote all
X-Works removed my manifolds (for ceramic coating) on both my Tuscan convertible and my Sag without taking the engine out . Heath just complained about taking the skin off his knuckles smile .

mk1fan

9,885 posts

185 months

Monday 7th September
quotequote all
That's a harsh thing to do to the apprentice.

PixelpeepZ4

6,134 posts

102 months

Monday 7th September
quotequote all
Did you not learn anything from Fast & Furious ?

too much NOS! Danger to manifold !

laugh

ochten

Original Poster:

238 posts

163 months

Thursday 1st October
quotequote all


What a work for a crack! Engine out that is fine. But now are some bolts seized and very difficult to reach! W hat next?

Cut the manifolds off to clear?

ochten

Original Poster:

238 posts

163 months

Thursday 1st October
quotequote all

mk1fan

9,885 posts

185 months

Friday 2nd October
quotequote all
Are they stainless bolts? Someone forgot the copperslip.

Allen socket on a couple of extensions?

Some gentle heat?

Sagi Badger

500 posts

153 months

Friday 2nd October
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Done it twice engine in and a few times on the bench. You need acres or patience and it helps if you soak them well. I haven't tried freezing but it gets good reports. I have a monster selection of hex bits, all makes including some imperial ones that are ground down to be extra tight. there is one I think that only a ball end will get, leave this till last so you can jiggle-ize the manifold to help it loosen off. I have a 6mm ring spanner with a stub of cut down allen key in it, loctite retainer or a wedge of tape will hold it in.

The bolts are normal 12.9 cap heads, not stainless. Stainless bolts are a mare, you only get one chance. Don't be tempted to chisel these round, there is next to bugger all meat around them into the port and I have seen them cracked from thread hole into the port. I never over tighten them, palm ratchet only.

J