GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: bmouthboyo on 13 May 2009, 21:03
-
Hi Guys,
I have just bought a T25 camper with a 1.8 K-Jet engine (i think), and have found a crack in the exhaust manifold.
(http://i176.photobucket.com/albums/w182/bossman187uk/DSC_0207.jpg)
Basically this will fail the MOT wont it?
If so whats my best option? reweld or replace?
If replace anyone know where i can get one?
Thanks
-
yup thats a crack, problem is been a conversion you'v bought off someone you can never be 100% sure what bits were used.
you chould weld it but cast dosent weld very well stick welder and high nicel rods is best bet but its a pita and will probaly crack again. i bet is a 1.6 NA diesel exhaust manifold
unless it's blowing lots it'll probaly pass the mot
-
I welded one up once, could be worth a try 1st.
-
damn nightmare, its all pretty tight down there so could do with identical part. would there be an part code on it?
Would taping it help? it does blow enough that if i put hand near it i can feel it.MOT fail?
if it passed mot, what would worst case scenario be just leaving it as is?
thanks
-
damn nightmare, its all pretty tight down there so could do with identical part. would there be an part code on it?
Would taping it help? it does blow enough that if i put hand near it i can feel it.MOT fail?
if it passed mot, what would worst case scenario be just leaving it as is?
thanks
Taping won't work very well due to the heat, leaving it as is could cause issues with how it runs.
-
stitching ( drill tap bolt drill tap bolt ) don't work on manifolds
welding them is a pig, on tractors when ther;s room i clean the manilfold off in situe and fire the bugger up and give it some load ont he pto so the manifold gets HOT stop the motor then welde lots of current with a high nickel rod then start it back up again to stop things cooling to quickly.
to try and weld that you'll have to find a scap head or somethign to hold the manifild true while you weld it and heat it up with gas first
-
That looks to be a 1.6D NA manifold on there.
You need to lose that, as it will be stranglifying the engine.
Get a Golf GTI manifold and fabricate a pair of downpipes, into one, into a single box. When I did one i just put the pipe into a GTI backbox - worked well and sounded fine.
-
I have the manifold from a 8v engine going spare if you want it. Does have a hacked off downpipe attached to it that'll be a pig to get off though.
-
problem is i guess the converter put that smaller manifold in there for a reason as he seemed to know his stuff with a full engine replacement. I am guessing the normal gti manifold wont fit as its tight in the camper engine bay.
If i take this cracked one out will there be a part number on it? That might help.
Otherwise does anyone know if a gti manifold is much bigger?
Thanks a lot guys couldn't do this without all ur help.
-
gti manifold will fit in the hole. need to custmise the exhaust tho not exactly complicated.
made a pattern for a 4-1 when i was getting into idea of camper engine conversions then i came to my senses
-
the converter put that smaller manifold in there for a reason as he seemed to know his stuff with a full engine replacement.
Hardly.
He had a 1.6D manifold in his hand, as it came off the 1.6D motor he was pillaging for parts like the water flanges etc. It fitted on the GTI motor and connected to the rest of the awful 1.6D exhaust, so it went on.
Don't presume too much skill or knowledge from that conversion - it pretty much all bolts up. Not a difficult one to do badly.
-
dont suppose you have any links to info on how to do / design that for a T25 bay?
The manifold on there goes to a 4 stud single downpipe, ill try and take measurment when i get old manifold off.
Any ideas of prices to get one fabricated for a gti manifold to a single downpipe thatll fit?
Also how do i go about measuring the curvers etc that i would need?
And lastly what negatives are there from running this engine with a 1.6 manifold? i guess there will be a negative effect in performance but would it also have a knock on effect with gaskets etc ?
Thanks a lot for all the help so far guys.
-
And lastly what negatives are there from running this engine with a 1.6 manifold? i guess there will be a negative effect in performance but would it also have a knock on effect with gaskets etc ?
You're strangling it.
Any custom exhaust takes you away from 'default servicing' but with a Golf engine in a T25, as far as most garages are concerned you're a million miles away from standard anyway.
If you change to GTI manifold and downpipe, you can keep to GTI manifold gaskets and GTI downpipe gasket, then if you have a sleeve joint to the silencer you shouldn't have any servicing issues, if it's in a garage.
The actual exhaust pipe (all of about 2-3' of it) HAS to be custom. A T25 TD silencer will do on the end of your custom downpipe. This will fit on the standard mounts.
-
Thats great so basically if i source a Gti manifold and the top part of a downpipe i can use a sleeve to connect to the existign downpipe and silencer.
This wouldnt require any welding then would it?
Also are those flexi exhaust connection things any good? as these would allow me some play when attatchign it all to the new GTi downpipe.
My main concern is how tight it is in the engine bay, also with a standard gti manifold, wont it sound too loud for the MOT without a center silencer etc.
-
It's gonna need welding.
Unless I'm much mistaken there's no noise limit on the MOT test.
The ones I did weren't that loud at all.