Inlet manifold air leak xjr 400

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CottonBudBear
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Inlet manifold air leak xjr 400

Post by CottonBudBear » Mon Oct 27, 2014 9:37 pm

Image

I have an air leak coming from the vacuum nipples on the inlet manifold, the brass nipple is very loose and air is getting in, anybody have a home remedy for this like using brass splicers or inserting a larger brass tube and capping it off..

Here's a pic of the motor

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dobbslc
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Re: Inlet manifold air leak xjr 400

Post by dobbslc » Mon Oct 27, 2014 10:15 pm

If you still need it for a vacuum supply I would find a slightly larger diameter tube and push it in or insert a 5 or 6mm bolt.

Evilchicken0
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Re: Inlet manifold air leak xjr 400

Post by Evilchicken0 » Tue Oct 28, 2014 9:30 am

As a home remedy I'd use some silicon sealant, put it on the pipe part but not on the end so when you stick it in nothing goes inside.

As a long term solution I'd look for some inlet manifolds. I think the FZ600 used the carbs from the FZR400 because the frame was too narrow for bigger carbs. The FZ used the XJ600 engine and I think the XJR used the XJ engine .... hope you follow that :) You'll need to do some home work on that so measure the internal dia of the carbs (32mm ?) and try to match them up.

willandrip
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Re: Inlet manifold air leak xjr 400

Post by willandrip » Tue Oct 28, 2014 4:51 pm

^ Correct
A red box doth not a Snap On make.

CottonBudBear
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Re: Inlet manifold air leak xjr 400

Post by CottonBudBear » Wed Oct 29, 2014 12:01 am

Ye I'm currently trying to source some 4mm brass pipe for the inlet rubbers. They aren't in bad condition, apart from the holes for the vacuum supplies and I dont mind a bit of DIY

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Re: Inlet manifold air leak xjr 400

Post by Evilchicken0 » Wed Oct 29, 2014 9:02 am

Is there a vacuum to the fuel tap then ?

CottonBudBear
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Re: Inlet manifold air leak xjr 400

Post by CottonBudBear » Wed Oct 29, 2014 11:43 pm

Ye no.1 goes to the back of the pet cock

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Re: Inlet manifold air leak xjr 400

Post by Evilchicken0 » Thu Oct 30, 2014 9:03 am

Is there another stub that has a take off point ? maybe you could use that and seal no1 permanently, you might need a new bit of vacuum pipe but it would be easier than finding new stubs

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Re: Inlet manifold air leak xjr 400

Post by CottonBudBear » Thu Nov 06, 2014 8:42 pm

Got everything sorted, il post a pic up when she's up and running.


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