Discussions relating to Turbochargers, Superchargers, Induction, Engine Mods, Exhaust Mods, and other items specifically to make your MX5 or Roadster put out more power.
Moderators: Growler, jif, SLYDIT, Born_disturbed
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malcster
- Need, more, 5-ing, time....
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by malcster » Tue Aug 21, 2012 12:47 pm
Found a small crack in my turbo manifold and wondering what my options are...it looks to be close to where the turbo sits on top and about 2x inches long and black exhaust stuff just starting to come thru.
Cheers.
1998 NB MX5 RS TURBO.
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evel
- I have stars and not afraid to use them
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- Joined: Tue Dec 13, 2011 9:19 pm
- Location: Whenuapai, Auckland
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by evel » Tue Aug 21, 2012 10:30 pm
weld it shut and pray
'94 S-Special 1800 in BLACK
Flares and 225/45 Semi Slicks.
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na6*dori
- Need, more, 5-ing, time....
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by na6*dori » Tue Aug 21, 2012 11:58 pm
easy flow on a low heat with the gas plant, the cracking of manifolds when welding is mainly due to the heat up cool down speeds, ive braised cast very slowly and it did the trick.
In which i trust, a cable ties a must
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malcster
- Need, more, 5-ing, time....
- Posts: 118
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by malcster » Wed Aug 22, 2012 8:58 am
Cheers Guys..will give it a go.
1998 NB MX5 RS TURBO.
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SLYDIT
- Keep calm, Forum Moderator here.
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by SLYDIT » Wed Aug 22, 2012 6:12 pm
pic of the manifold? is it cast ?
cracking can be caused by the manifold binding on the studs...drill the stud holes out to at least 11.5 mm to give it some room to expand/contract.
RED '90 TURBO.
SCARING PRIUS DRIVERS SINCE 2002
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malcster
- Need, more, 5-ing, time....
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- Joined: Mon Jul 25, 2011 10:13 pm
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by malcster » Wed Aug 22, 2012 8:07 pm
yeah looks to be cast..the crack is more on the top close to where the turbo bolts on..can take some pics..might be hard tho as fairly well hidden but will tomorrow and post. Cheers.
1998 NB MX5 RS TURBO.
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SLYDIT
- Keep calm, Forum Moderator here.
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by SLYDIT » Wed Aug 22, 2012 8:19 pm
take it to a specialist welder who is expert at welding cast metal. cast needs to be pre heated before its welded to prevent further cracking.
RED '90 TURBO.
SCARING PRIUS DRIVERS SINCE 2002
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malcster
- Need, more, 5-ing, time....
- Posts: 118
- Joined: Mon Jul 25, 2011 10:13 pm
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by malcster » Wed Aug 22, 2012 8:34 pm
O.K will do..car off the road for a while yet..lost my licence for 12x months..when I brought the car from Napier I was driving it back to Dunedin and was really tired and got pinged for doing 118 in a 50..didnt even see the 100 to 50 sign as think I was nodding off..then my detector went off but it was to late.
..still 5x months to go...
1998 NB MX5 RS TURBO.
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na6*dori
- Need, more, 5-ing, time....
- Posts: 115
- Joined: Wed Jul 25, 2012 8:01 pm
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by na6*dori » Wed Aug 22, 2012 8:35 pm
SLYDIT wrote:take it to a specialist welder who is expert at welding cast metal. cast needs to be pre heated before its welded to prevent further cracking.
Gas plant with easy flow, has to be warm anyway to stick so should be sweet, done it to a s13 ages ago.
And agree on the drilling of stud holes, its quite common to slot the manifolds aswell between the ports for the same reason
In which i trust, a cable ties a must
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malcster
- Need, more, 5-ing, time....
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- Joined: Mon Jul 25, 2011 10:13 pm
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by malcster » Wed Aug 22, 2012 8:40 pm
So I will have to take manifold off then?
1998 NB MX5 RS TURBO.
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SLYDIT
- Keep calm, Forum Moderator here.
- Posts: 1610
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by SLYDIT » Fri Aug 24, 2012 7:39 pm
yup
RED '90 TURBO.
SCARING PRIUS DRIVERS SINCE 2002
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