Implementing boost/ignition cut

[Richard L]

Please keep us updated.

[GCCR]

B Boy I believe you are absolutely right. I've lost count of the number of pro rolling road / dyno people who recommended I stay away from it because of reliability issues. However, I've persevered because......

I ran Aquamist WI on my ALMS Engined Turbo Jade for a whole season of Open Sportscar Series (Prototype Sportscars) racing in 2010. When it ran I noticed a significant increase in power, helping me to two wins in Brands Hatch and one win in Oulton Park.

With an M800 and full logging I was able to review what was going on and protect the engine when it failed through compensation maps. Main problem was that the system needed re-priming a lot despite a 2 gallon tank with a baffled outlet and empty/full water level gauge. It seems the braking / cornering forces interfered with the water level gauge as log data showed it activating intermittently at high G's, and, through my compensation maps, switched off the pump (I made up the maps and switch off function to stop the pump and avoid pump burn-out while at the same time activating the compensation maps to retard ignition and protect the engine).

What I think I need is some kind of flow meter which I hope will be more reliable than the gauge. It ought to be a simple matter to link it's output to a compensation map to do the same as the water level gauge - but perhaps more reliably.

I do like the system simply for the extra power I get from adding advance when it runs properly, but IT HAS TO BE RELIABLE UNDER RACE CONDITIONS.

Can anyone help......

a) With understanding why it keeps needing to be re-primed. (At many a race finish the pump is running away with no water appearing and I don't understand why.)

b) Whether there is a better solution than the one suggested above which can reliably preserve my engine in the, sadly at the moment likely, event of WI failure.

(PS - I raised this issue at the start of last season but can't find my forum questions on the forum right now).

Which pump are you using? Also, do you have any pictures of the baffled tank, you may simply need better baffling as the forces in the tank may be more violent than you think.

[GCCR]

Not sure of the name of the pump, but I've attached a pic of it here together with one of the tank. Note the little "sump" - itself baffled in the foot of the tank.

I'm suspect some kind of flow meter is the only answer although even that won't stop the intermittent "tank empty" signals.

Any advice welcome.

http://www.aquamist.co.uk/vbulletin/...1&d=1296553380

http://www.aquamist.co.uk/vbulletin/...1&d=1296553380

[GCCR]

Does anyone else out there actually run these systems on circuit race cars ? (See also above postings).

[GCCR]

Hi Richard......a couple of things......

a) Flow meter. This was working as well as it can on my system but really the signal output / measured flow is too sporadic to be of any practical use. I was using the output to trigger additional advance and less fuel (when flow was detected). Trouble was whenever the WI map dropped off the WI injected areas at low boost, it took ages to show flow again then back onto boost and water was injected again.

b) I've had a bad off and fire so need to replace the push in 4mm outlets on the pressure monitoring block but I can't see them on the site. Are they still available ?