Hello Jon
Ill be happy to post the pics up for you
pm sent.
Also you can join photobucket.com its free with
no BS and save all the photos you want and copy
and paste the image links to them onto our thread.
kind regards, David.

no lpg in the intercooler any way as its meter in just before the inlet into the head hope fully.
other wise it would be a big big bang!

if you had a throttle body to meter the air, it could act as a kind of flap to meter airflow into the inlet tract and if placed after the intercooler like on some modded akylines, the flap would almost act as a one way valve if air travelled the wrong way down the air way, not air tight but close enough

I guess that having an intercooler would soften the blow
on the turbo in a blowthrough in case of backfires.
Now I wonder if I can use some kind of one way valve/flap
to stop reversion/backfire?
Either way most backfires will occur with the old ring mixer
type setups and poor ignition systems.

With relatively low boost, even up to 8psi, with lpg you will not need any sort of cooling as the lpg is less prone to detonate even as a draw through system. I have seen a few draw through systems using a simple mixer and they worked well enough on mild boost applications (around 6 psi). LPG works well when hot as it burns much hotter in the combustion chamber anyway. the only thing you have to worry about is a backfire which will potentially stall the turbo and at high turbo speeds can be fatal, be it draw through or blow through.

i have 1 of these manifold already setup on my a15 oval port.. i dont no how to put pic's on here so if someone wants to post them up i will email pics of my setup to them

jon

nah free way at 100kmh ;) all the way on the free way up and down hills loaded up with roof racks, granny visor, an extra person and fishing gear- eskys. more than the car usually carries by 200kg

Mik good points to consider, might have to go blowthrough in the end but
really would like it as simple as possible. The water inj system are pretty
good these days, they spray a very fine mist.
Did that figure you achieved on mileage driven hard or granny style :)

Bruce no problems its not the same manifold as the one highlighted in the past.
Its the one with just before the plastic replacement Ill get the details soon
hopefully next weekend. I think they only came out the one or two years.

Mik thats great economy

Hi D,
I like your engineering.
Not wanting to steer too far off topic.
Is the hyundai manifold you used, the one that has been mentioned before as being similiar in design to the A series inlet manifold. (and could possibly be used as an injection manifold on an A series?)
cheers
Bruce

well i did 315km on 26lt of lpg over the weekend, pretty sweet deal i say.

might go single lpg on the L series, might get more power along ewith some economy gains over the rich and gas wasting twin set up.

id be worried with water injection prior to the impeller wheel D, if its not atomised, ive seen some pretty hacked up blades from not having a fine enough mist in the mixture.

Yeah thats my concern also Mik with heat.
I might have to water inj before it enters the turbo.
Its an experiment, I am aiming on cheap/simple but also performance
limiting inlet design matched to the hp/torque area Im chasing.
I want to make sure there is no waste on inlet charge suspension
like in bigger plenums and runners. There will be a few more pulses
with the single shared runners but still the path is not restricting
like on the stock manifold.
This system will hopefully be the final setup of the lpg/turbo engine
to go into my 1000 wagon but for now will use Dons adapter for
a stock 125 impco NA setup just to get the lpg installed and running.
Petrol is now rising again and Im trying like you Mik to have some
performance without my balls getting squeezed too hard by the oil mafia.