Techicnal (RB30e) Running Issues

[lukeskyline]

Hi Im new to these forums, and as the R31 Skyline Club site is down for the time being (changing server it would seem) I was hoping some people on here will help me with some issues im currently having with regards to an upcoming regular servce.

1. Basically its ran up 193,000 kms on the clock and im getting woried about the timing belt. Had a look at it the other day and u can see light brown marks on the non-notch side of it, does this indicate wear?

2. Plugs. It needs em bad. NGK seems to be the general consensess, but what about the irdium ones....worth the extra money? (how much "extra" by the way havent been to autobarn yet)

3. The motor (RB30e stock running 20 degrees) is running like, well, not good under roughly 2 grand but then at 2000 grand u feel it really thump and it takes off (mainly first gear and second (manual), never do 2000rpm in third) its feels like its almost fuel related....filter maybe? Dont want to randomly replace parts i dont have to (uni student). Again it has never done this until a few days ago...also i know my air regulator is stuffed so would that cause that kind of problem?

If i even get one of these questions answered that would be bloody fantastic

Thanks in advance Luke.

[JezR31]

yea our r31 is around the 200,000km mark.

Belts -

The timing belt should be changed every 100,000kms but it will most likely last past 100,000 for a while depending on when you replaced the older one, but its best to replace it.

Im getting all the belts on mine changed, the power steering one is starting to fray and i think the timing belt isnt much better.

plugs - I would just buy the copper ones, they do just as good and they cost alot less but i think you get more kms out of the iridiums.

It would be a good idea to change the petrol filter. Its probably blocked up with shit, it will make a fair difference after you change from a bad filter to a new one.

Other things while your at it -

Perhaps change the air filter and clean the throttle body.

An oil + filter change if it needs one - some good quality mineral oil would be fine and its not to expensive.

Thats most of the stuff thats been done on my r31, but i still need to change all the radiator and heater hoses as they are getting crunchy and the radiator needs flushing. Plus i think the thermostat has stuck closed as the temp needle gets to high very often.

[R31 POWER]

The R31 forum is back up now.

[lukeskyline]

R31 POWER

Yay! thanks for the heads up.

Skyline Boy. Thanks for ur help most appriciated

[SKY031]

Back the timing off a bit... 20 degrees isn't helping

[cazz]

3. The motor (RB30e stock running 20 degrees) is running like, well, not good under roughly 2 grand but then at 2000 grand u feel it really thump and it takes off (mainly first gear and second (manual), never do 2000rpm in third) its feels like its almost fuel related....filter maybe? Dont want to randomly replace parts i dont have to (uni student). Again it has never done this until a few days ago...also i know my air regulator is stuffed so would that cause that kind of problem?

You might wanna check your air flow meter if you are having problems under 2000 rpm. Just a thought. This is what you might mean by air regulator. AFM's are not all that cheap, but can cause a heap of agro if they are on the blink. I agree with SKY-031, 20 degress is a bit on the high side if you are running standard unleaded. If you want to run PULP, 20 degrees is OK.

[lukeskyline]

yeah ive been meaning to check the timing again for a while now, and after hearing it pinging 2day pulling up a steep hill, second and low rpms, so i took it home and checked it. To my suprise the timing was not at 20, but more like 13-14 degrees doh what else causes pinging? Or makes a softish *clink* *clink* *clink* sound under those driving conditions? Wasnt hot 2day either 10-12 degrees ambient temp...

Cazz....yeah I have already done extensive testing on the AFM, when i say air regulator i actaully mean air regulator its stuffed (sorry should have said that it was ok :. Thanks for ur help anyway always appreciated .

Thanks everyone for advice/help will 'report' back from service 2moro....hopefully my mechanic mate can shed more light on my issues