aaz power good but slow top end

Post by **darren** » 23 Sep 2008, 20:28

i have just fitted a fully rebuilt aaz 1.9 with a full 1.6td exhurst system and manifold a bolt on cone airfilter into my van its got a petrol abn 5 speed gearbox it sounds and pulls like a dream im over the moon with it but its been fully set up to the vw settings and ive added a boost pin from brickworks but i seems like its reluctant to go over 65 mph dont want to push it untill its fully run in, i know its a van not a race car am i exspecting to much it also gets upto full temp after 1 mile is this right ive go a intercooler from a mk2 golf gtd ready to fit soon will this help

Post by **andysimpson** » 23 Sep 2008, 21:02

Who rebuilt it?

Something very very very wrong if its upto temp in 1 mile

Post by **darren** » 24 Sep 2008, 17:38

a vw trained and trusted techicsion im away for a week going to retry when i get back ive had it running and the fan comes in and i bleed the water system might retry bleeding it when i get back

Post by **darren** » 30 Sep 2008, 08:01

bleed the water system no more heat takes a good 3 miles to warm up just got to run the engine in now

Post by **HarryMann** » 30 Sep 2008, 10:47

and manifold a bolt on cone airfilter

I'd make very sure that is large enough to cope with the airflow through a turbo'd 1.9 without restriction - massive.

What revs correspond to that speed where it tails off?? That's the important information missing...

Post by **HarryMann** » 30 Sep 2008, 10:52

ive go a intercooler from a mk2 golf gtd ready to fit soon will this help?

If the pipe runs are short enough and it has a plentiful supply of cold air through it...

If you're using more fuel with that pin (what angle is it set to?), or have overfuelled it a bit... then you need an EGT gauge!

Also, an oil temp gauge.

Have you fitted a big oil cooler up front?

What boost pressures are you running at?

Possibly the JX diameter exhaust is limiting, but wouldn't think by much, 2 1/2" is about ideal.. JX about 2 1/4"

Post by **dugcati** » 30 Sep 2008, 11:19

bleed the water system no more heat takes a good 3 miles to warm up just got to run the engine in now

I am with this one.. also if it's no top end is the timing fully correct - if out a little then you would see lack of power top end.......

Post by **darren** » 01 Oct 2008, 00:21

i swaped it from a dj petrol today put the intercooler in the back by air vent seems good supply of air but fitted a motorbike fan to it to help from a flick switch on dash might get me mate electrical buff to make some sort of temp switch circit up for it im using a mix of plastic pipes of a passat n reg tdi.now its beeding in pulls nice feels a lot better,been upto 65 mph but not ready to push it to much yet want to be safe and run it in slowly the boost pin is from brickwerks i think im going to run it in for a week then reset all timing including pump with the dial the water temp has coming down no its been bleed runs at half temp by the light goes over if you climb longish hills but fan comes in ive got some audi oil temp/ presure and volts also a boost dial to put in should find out what the boost is then and a oil cooler but need to get the sandwitch plate any ideas where to get would be helpfull only finding ones for petrol engines

Post by **ringo** » 01 Oct 2008, 08:21

Like this:

http://cgi.ebay.co.uk/OIL-COOLER-SANDWI ... 286.c0.m14

Just ask them for a price of a thermo one - mine was £35....

Ringo

Post by **HarryMann** » 01 Oct 2008, 08:31

yes thinkautomotive do them http://www.thinkauto.com/index.html you want SP1 or OTSP1 latter has thermostat and costs more goto webshop on left hand menu SP1 has 1/2"BSP fittings they do any hose fitting uwant need 19 row pref 25 if going to push it in hot weather loaded, mazing how much heat goes into oil on IDIs mine has SP1 w/o thermo cost 25quid only get a spare rubber seal as well cant find them down road if need one quick pipelength to front is 13.5' & 14.5' pref 1/2" mine is 3/4" giving 7 litres oil total=good cheers

Post by **ringo** » 01 Oct 2008, 17:07

Does the oil from the oil cooler just drain into the sump when the engine is off?

How do you check the level?

Im a bit worried on this as i fitted my oil cooler and dont think i have put enough oil in (bout 6 litres) but the oil level is correct....

I also put the radiator in with the connectors at the top - so i guess im going to have to drain that manually....

Thanks

Ringo

Post by **darren** » 04 Oct 2008, 09:51

ive sorted a oil cooler got a beast from a audi rs4 just got to sort oil pipe work think a morgage is needed at £26.99 a meter ,still having problems with temp runs all day at half fan comes in the lot go up a hill and flys upto 3/4 and more soon as i hit flats down like a rocket ive flushed the rad swaped the new termostat for old one bleed and bleed even had waterpump off the check splines arnt loose thinking of driving of a cliff ha ha

Post by **darren** » 05 Oct 2008, 10:02

took the thermostat out no more problem going to try a lower temprature thermostat in it

Post by **DiscoDave** » 05 Oct 2008, 10:07

what revs is it doing at 65mph?

Post by **andysimpson** » 05 Oct 2008, 11:37

darren wrote:took the thermostat out no more problem going to try a lower temprature thermostat in it

It will run hot without thermstat, you have made it so the water has an easier route than going through radiator.