Thread: D2 TD5 timing chain alignment ?

well took it for a decent run today, drove to work ( 15 mins down the perth hills) no probs, runs sweet. at work checked oil and coolant levels all good.
drove up this arvo and temp was good all the way up the hill sitting on 88-89 via nanocom.
but as i pulled into driveway, went up to 95 before i shut her down.
checked coolant and its still high in the tank, although the top radiator hose was rock hard.
do i need take the head off again
or maybe the thermostat. it is new, but was replaced before i worked out the head gasket was blown.

Originally Posted by Rosscoe68

well took it for a decent run today, drove to work ( 15 mins down the perth hills) no probs, runs sweet. at work checked oil and coolant levels all good.
drove up this arvo and temp was good all the way up the hill sitting on 88-89 via nanocom.
but as i pulled into driveway, went up to 95 before i shut her down.
checked coolant and its still high in the tank, although the top radiator hose was rock hard.
do i need take the head off again
or maybe the thermostat. it is new, but was replaced before i worked out the head gasket was blown.

Those numbers are fine 95 isnt hot.
Without checking the RAVE manual the TD5 in the D2 has a cap pressure of 22 or 24 psi, so if you have filled the coolant level high you wont get to squeeze the hose much before you compress the small amount of air in the header and obviously will need to exceed the cap presure to vent it overboard. What other things a re leading you to think it has to come off again?

cheers

Originally Posted by Rosscoe68

drove up this arvo and temp was good all the way up the hill sitting on 88-89 via nanocom.
but as i pulled into driveway, went up to 95 before i shut her down.
checked coolant and its still high in the tank, although the top radiator hose was rock hard.
.

No! As Strangy has said above that should be fine. The temp will go up even more with heat soak once the car is off.

It's obviously going to go up when you stop, much reduced air flow, and slower water circulation will be two reasons.

The hose will be rock hard. Thats fine. If its not blowing coolant out stop worrying! Just use it! will be fine

Cheers
Pete

only concern is that i have2 D2 td5's and they run totally different temps (both have nanocoms for temp monitoring) is what worries me.
1 i have had for a few years runs hotter climbing the perth hills(92-94 sometimes even higher), but settles as soon as i get on the flat, and idles no higher than 90-91.
new one runs cooler up the hill 88-89 but get hotter at idle ( 95 )
will continue to drive it for a few more days and see how it goes.
want to drop the oil and pan and check oil pump bolt next so dont wnat to drive it too much, but dont want to do oil change with new good oil and find i need to dismantle it all again and waste $100 of oil

never even thought to consider the viscous fan.

oil pump bolt done today and wasnt very tight. so lucky i checked

viscous fans a good start but dont forger to check for build up between the condensor, the intercooler and the radiator.

The reason the chain takes so many turns to line up again is beacause its setup as "walking link" on both the cam and the crank gears. This helps to distribute the wear evenly on all the teeth and links, If it was "static link" the chain and gears would pattern wear into each other and then correct alignment and rotation would become a problem on reassembly after maintenance and the chain would "spot" wear faster.

yep some pumps are noisey and others arent, epsecially the after market ones but I would suggest pulling the noisey one and cleaning out its "swirl pot" and strainer.