newby//VW T4 1.9TD ABL

[tunedbandit]

Hi peeps
iam new to the forum & what ive read it looks great,,,iam in the stages of tuning my t4 van ive done most power mods

egr blank/turned up boost/boost gauge fitted/fuel screw tweeked up/fully hand made side exit using the original vw exhaust flange but opened up to accept the 2.5" inner diameter new generation impreza exhaust pipe work then going into a zostec can all unrestricted,,iam wanting some more is it right  by fitting a AAZ pump this will achive power power/grunt

thanks Rick

[Rabbit on Roids]

take a 1.9 and 1.6 pump and build yourself a franken pump. it will put out plenty of fuel. AAZ pumps have stupid joke LDA's that dont really do anything. 1.6 pumps have good LDAs

[tunedbandit]

thanks for replying

ive been told a straight swap Eg: fitting a AAZ pump would make a big difference to the 1.9t TD ABL but iam know pump expert 

[Rabbit on Roids]

just search for people building fuel pumps. or the easiest thing to do would be to put the top off a 1.6 pump on a 1.9 pump body.

[MJF]

Check the pump number, ABL might have 8mm pump.

[55eta]

the easy way is to look for a peugeot or Citroen pump as they have all the adjustments on the lda but make sure its a td and bosch not lucas the peugeot 405-306 before1995 are about the best that is if you have a manual cold start lever[ choke] if not later year models would be better.To be safe you should really fit a inter cooler as the bog standard pug pump is set up for 90 odd hp I did the swap last winter on a t4 it was ok all winter but middle of summer head gasket blew i have since fitted a chargecooler upped the fuel and boost with no problems ,but probably needs oil cooler

[55eta]

forgot to say to make sure its a 1900cc not 1800cc as the 18 has a 8mm pumps not 9mm and if you are looking for a bit more the later Peugeot 406 has a 10mm pump but has got electronic cold start control but you can swap the 10mm head onto the the earlier pump that would give you a lot more scope for more power its also worth looking at the 406 injectors if you go down the 10mm road as they have a 170-180[ bar]brake pressure

[tunedbandit]

the easy way is to look for a peugeot or Citroen pump as they have all the adjustments on the lda but make sure its a td and bosch not lucas the peugeot 405-306 before1995 are about the best that is if you have a manual cold start lever[ choke] if not later year models would be better.To be safe you should really fit a inter cooler as the bog standard pug pump is set up for 90 odd hp I did the swap last winter on a t4 it was ok all winter but middle of summer head gasket blew i have since fitted a chargecooler upped the fuel and boost with no problems ,but probably needs oil cooler

yes mate my T4 as the manual cold start,iam going to fit a inter-cooler in the bumper but not so it says "LOOK AT ME" more a subtle discreet look,,did fitting the pump t4 your t4 make it worth doing power/grunt/drivable wise

[tunedbandit]

just search for people building fuel pumps. or the easiest thing to do would be to put the top off a 1.6 pump on a 1.9 pump body.

funny you should say that cause i was talking to a diesel guy today & he said the pumps are basically the same apart from the tops

[tunedbandit]

Check the pump number, ABL might have 8mm pump.

pardon my ignorance but iam not too up on the 8mm thing,,i guess bigger that is the better

[55eta]

@ tune bandit The 8mm bit refers to the diameter of the plunger of the pump [basically the the bigger the the diameter the more fuel you inject]= more power you produce providing you got the boost to match.As for the pug pump on my t4 it will stay with the standard 2.5 tdi [inter cooled version] no problem if not a bit quicker but you must have a decent inter cooler other wise you will end up melting some thing.The standard 1.9 pug pump is set up for 90hp as standard used with a suitable inter cooler and needs very little modification to fit your engine,just the cold start lever [the pug has a temperature controlled cold start via a cable coming from the cylinder head]  and drive pulleys and possibly delivery valves .P.S the standard abl engine produces 68hp, with very little adjustment you should be able to get 100-110hp with out changing the plunger and head using the pug/citroen pumps

[55eta]

forgot to say you have probably got a immobilizer on your pump which will have to be removed or swapped i think there is a thread on that some where on this site

[tunedbandit]

thanks eta55 you clearly know your stuff  ive got pictures of the pump that i can get my hands on,,once ive bought it iam going to get it overall-ed as from what ive read most folk that have fitted theses pumps seem to have problems due to leaks probs due to the fact of the age of the pump,,diesel guy i spoke to yesterday said its not the pumps at fault its the seals as they were fitted to millions of vehicles,,mods ive done to my T4 have made a big difference over standard with out question,,the most noticeable one been my hand made by me side exit exhaust system,the vw front pipe exhaust flange is very restricted as i found when i removed the total exhaust,the manifold exit is massive then the front pipe is very small so this is what i did

chopped flange with standard piece of front pipe

all the required bends/straights & modded vw flange
opened up cleaned & burred front pipe flange

front pipe now completed with skinny standard vw exhaust to the side

all the pipe work i used i managed to get from a damaged "New Shape" impreaz cut all the back bits out & that's what i came up with,,all going to/welded into a straight through zorstec silencer/can "Throaty diesel sound"

[tunedbandit]

numbers on the AAZ pump are as follows

pully No: 028130111C

Pump Housing just says BOSCH on it.

LDA cap No: 1465530724.

pics ive been sent are as follows

pump back view

pump front view

[55eta]

good job on exhaust it always helps on a td engine to get rid of the gases quicker it also removes heat, as for the pump you have the right boost pin but the top of the aaz pump dose not have the adjustment for the boost pin so you are limited to just changing the spring rate compared to what you have on the peugeot pumps which are basically the same as the vw 1.6 td pumps, plus the aaz in stock form is set up for 75hp compared to the 90 hp on the pug pump all thougt you have got the same potential as they are both 9mm pumps ,if i was in your position i would be looking for a different top the one you need has a locking nut in a reses right on the top of the pump which allows you to adjust how much movement you get on the boost pin which intern determines how much extra fuel you get when on boost plus there is another internal adjustment  and between the two you can adjust how much extra fuel and,
,when you start to get it.It is not just the performance aspect i say this as i have seen pepole use the more aggressive boost pins in aaz pumps and suffer from to much fuel early in the boost cycle which produces exes black smoke .the m.o.t mans little machine don't like that but the boost pin wll make a noticeable difference in the aaz pump over the abl pump which is basically a normally aspirated pump