Need more towing power badly

Hi Bee Utey

I had my air intake off today and took a pic.

Just to confirm, the opening measured about 40mm diameter.

Can you get bigger ones than this ?

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Originally Posted by adm333

Hi Bee Utey

I had my air intake off today and took a pic.

Just to confirm, the opening measured about 40mm diameter.

Can you get bigger ones than this ?

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Yes you can get bigger, 46mm, AMR Manufacturing make one suitable. The one I use requires a slight remachine and a notch filed in the side to clear the cruise control bracket.

However of more concern in your pic is what appears to be the gas inlet hose, with a brass elbow in it??? This may be the root cause of your problem, not allowing enough gas to flow for full power. There should be a smooth bend in the gas hose to connect directly to the inlet. A hose with a bend at one end is a standard lpg part, available from most wholesalers.

That elbow goes into the large rubber inlet pipe about 10cm before the actual plenum.

Is that the gas feed ?

Quote:

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Originally Posted by adm333

That elbow goes into the large rubber inlet pipe about 10cm before the actual plenum.

Is that the gas feed ?

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Well I am not there to see closer, but if this hose comes from the gas converter then its probably the gas feed hose. Just I can't see any other hose big enough at the mixer. Oh, and your picture isn't all that clear so its a best guess.

I'll post a better picture with it all set up. That pipe doesn't go to the gas converter. It loops in to the main air intake pipe

Here's a better picture with everything in place.

The arrow shows where that brass elbow is connected.

Dave

Much better pic, thank you. I think you can't just fit a bigger mixer as you have a Sprint LPG processor that has no manual power adjustment. So you can't easily adjust its flow rate. For that reason alone I will never buy a Sprint processor.

The one I use (Gastec) has built in tuning lights and manual power adjustment, so is extremely flexible. The most suitable version for towing is the FP50-TOW as it maintains full power continuously over a preset throttle setting. I retrofit this to D1's frequently and it has been a great success.