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News: BetaMeeta20 11th July 2020
http://www.betaboyz.myzen.co.uk/forum/index.php?topic=4080.0
 
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Author Topic: Inlet & Outlet pipes  (Read 2186 times)
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cheeky monkey
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« on: June 19, 2010, 05:09:50 PM »


I thought id replace the fuel hoses for the inlet and outlet to to the carb (weber 32 DAT) as they were looking poor and evidence of a little fuel at the top where it joins the carb. Having put new hoses in its got worse, so i tried a lower bore size & different type of clips i still get petrol coming from at least the inlet but its hard to tell. putting the original pipes back on the prob is worse than it was originally. There doesnt seem to be any damage to the pipes coming out the carb themselves - or is it possible to get a hairline crack in these do you know.? 
Ive used a mirror to check around the area and its not coming from any gasket - they were changed recently and look fine.
any ideas appreciated
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Graham

1979 beta coupe 1300
MattNoVAT
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« Reply #1 on: June 21, 2010, 11:28:21 AM »

I test pipes by removing them and then blanking off one end and connect the other end to my compressor, then drop the pipe into a bucket of water and fire air through the pipe - leaks should be obvious.

Always use the same bore puipes if you can when replacing.

If the pipes are OK and I suspect the new ones are then I'd be looking at maybe checking/replacing the mechanical fuel pump or check the fuel tank to ensure that its not blocked the main fuel feed.
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1981 2000 Coupe S2/FL
1976 1600 Coupe S1

Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the back of the car. Horsepower is how fast you hit the wall and torque is how far you send the wall across the field once youve hit it.
cheeky monkey
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« Reply #2 on: June 22, 2010, 08:08:35 PM »

thanks Matt

the pipes seem fine and the fuel pumps been changed.. Its almost as if there is too much fuel being pumped through rather than anything being blocked.
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Graham

1979 beta coupe 1300
WestonE
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« Reply #3 on: June 23, 2010, 06:15:33 PM »

Cheeky

Any chance the float level has been disturbed in the changes? Also the brass pipes press into the carb body I have seen them loose in the past. If this is the case remove it clean it and refit with permanent stud lock.

Eric
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cheeky monkey
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« Reply #4 on: June 24, 2010, 10:09:52 AM »

Righto Eric.. will have a look at that too.
thanks
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Graham

1979 beta coupe 1300
cheeky monkey
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« Reply #5 on: July 09, 2010, 08:03:29 PM »

It was the inlet pipe causing the leak.  Once refitted, although the idle was ok I couldnt get the ignition timing right, so Southern Carburettors who are very close to where i live sorted that out.  They have a similar set up to Northampton Motorsports who i think some of you know, with a rolling road etc.  http://www.southerncarbs.co.uk/  I would recommend them.
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Graham

1979 beta coupe 1300
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