Drysumping

Competition engines and ancillaries - general discussion
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torkil
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Drysumping

Post by torkil » October 10th, 2017, 8:47 am

Hi Have a Titan Type 2 Drysumppump with 30 teeths pulley , Power take off on camchaft on gearbox end , conected with belt ,to get it lower located on the engine, I read that the pump hawe to rotate half speed off the crank and also havve to rotate clockwise , so i have to use a 30 teeth on the camchaft too, Any hints or sites i can i can read more ,? Ove Thorkildsen Oslo
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Guy Croft
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Re: Drysumping

Post by Guy Croft » October 10th, 2017, 12:18 pm

half crank speed is normal for the Titan pump Ove.

Camshaft is half crank speed... OK.

However, if you run the pump off the cam at the gearbox end it may be too high in the engine bay to work properly. The hose to the pressure stage from the tank should be gravity-fed not sucking thru a height (where the pump is higher than the tank). The scavenge system also may not work if the scav stages have to suck the oil 2 ft above the sump..

G
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torkil
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Re: Drysumping

Post by torkil » October 10th, 2017, 6:13 pm

Yes is will bee fitted low down , with a long belt , Not directly on camchaft, Ove
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Guy Croft
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Re: Drysumping

Post by Guy Croft » October 10th, 2017, 11:23 pm

post photos so I can check your layout..

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torkil
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Re: Drysumping

Post by torkil » October 14th, 2017, 9:20 pm

Yes i will send picks , wery difficult , no one to discuss with here ,Possible i buy a titan pulley 30 teeth and make a take off from cam on the gearbox side , Titan caal ther pitch on pulley for 3/8 inch , Do you know what that says ? , and i also wonder if Gilmer belts fits , They make werey long belts.
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Guy Croft
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Re: Drysumping

Post by Guy Croft » October 15th, 2017, 1:24 pm

The Titan 30T pulley is 3/8" pitch trapezoidal (rectangular teeth).

It will accept industrial or automotive pitch - auto 3/8" pitch is stronger but if you use a 3/4" wide drive belt either will do. There are more lengths of belt available in industrial than automotive.

If you run off the cam you need to work out a position for the pump so that you can be sure to find a belt of the right length. It is a good idea to use a tensioner. The drive pulley from the cam should have flanges front and rear so the belt stays in place.

In the photo the drive pulley has only one flange (there is not enough room for two flanges) but there is a flange on the rear of the tensioner pulley.

It is easier to use a tensioner than to try and mount the pump in the 'perfect' position to get the belt tight.

I can help with belts & pulleys etc if you need me..

G
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torkil
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Re: Drysumping

Post by torkil » October 15th, 2017, 3:12 pm

Thanks Mr , Croft ,Wery useful info about Drysumping, Defenly need belt and pullyies.
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torkil
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Re: Drysumping

Post by torkil » October 15th, 2017, 3:17 pm

Hi , do you use 2x 25 toots pullys , Difficult to count?
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Guy Croft
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Re: Drysumping

Post by Guy Croft » October 15th, 2017, 6:39 pm

Ove I can get any pulley made you want but for cam drive you need 1:1 drive

good for 9500rpm engine speed...

30 cam - 30 pump

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torkil
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Re: Drysumping

Post by torkil » October 17th, 2017, 11:23 am

Thanks whats the price for a 30 teeth doble flanget pulley that i can make some pices and fit on the cam?
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Guy Croft
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Re: Drysumping

Post by Guy Croft » October 17th, 2017, 12:14 pm

sorry my mistake - the standard series 2 Titan pump has 22 teeth not 30

I have two types of drive pulley - see photo - with 22T

Both are designed to run at 1/2 crank speed - One has two flanges, the other has one flange with a tensioner with rear flange. The pulley cost (of either type) is £90 + mailing.

It would be much more to make one single pulley (& design time) so if you use one of these it would be better..

G
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torkil
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Re: Drysumping

Post by torkil » October 17th, 2017, 6:19 pm

Thanks for useful info, Mr .Croft
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Guy Croft
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Re: Drysumping

Post by Guy Croft » October 17th, 2017, 6:32 pm

my post amended dear Ove,

I apologise for all the mistakes I am making,

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Will01
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Re: Drysumping

Post by Will01 » March 7th, 2018, 2:36 pm

Following with interest.
Good luck
Will
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