Jump to content
SAU Community

Recommended Posts

Hi all,

Currently in the middle of replacing the timing chain on my VQ25DD (2002 M35 Stagea).

While I've got the engine at TDC, and the crankshaft mark and intake cam sprocket marks lined up with the old chain markers. I've found that the top stretch of old chain between intake cam sprockets was too spread apart, so that the new chain can't reach the last tooth to make the new chain marks align with the sprockets.

Hopefully the photos make it clear what I mean. Comparing that section of the old and new chains you can see the difference in length of about half a chain link. The two photos of the cam sprockets show one mark lined up, and the other as best I can make it reach - one tooth too short for the sprocket mark.

The best thing I can think to do is stow the tensioner on one or each of the cam chains and that might give me enough play to nudge the chain over that last tooth. 

Any better ideas or if this is ok to do, or even work as I'm hoping?

hoping @scotty nm35 might be able to weigh in...

Also looking for recommendation on the silicone/rtv product to use to reseal the case on when the time comes.

cheers!

 

IMG_2632.JPG

IMG_2631.JPG

IMG_2630.JPG

IMG_2629.JPG

This might be a silly question (as I don't know these motors at all), but in your chain side-by-side photo, you have 2 pink marks on the top (new?) chain lined up with 2 orange marks on the other chain. I can see the 3rd mark on the top chain is orange.

So whilst all 3 marks on the bottom chain are orange, is there any possibility that you're lining up the wrong marks there?

With the silly question out of the way - I note that the cam gears have slotted holes. Would these be to provide you with the 1/2 a tooth's worth of adjustment to account for chain stretch?

This might be a silly question (as I don't know these motors at all), but in your chain side-by-side photo, you have 2 pink marks on the top (new?) chain lined up with 2 orange marks on the other chain. I can see the 3rd mark on the top chain is orange.
So whilst all 3 marks on the bottom chain are orange, is there any possibility that you're lining up the wrong marks there?
With the silly question out of the way - I note that the cam gears have slotted holes. Would these be to provide you with the 1/2 a tooth's worth of adjustment to account for chain stretch?


No such thing as a silly question.
Photo colour may be misleading, the old chain is two pink for cams, one orange for crank. The new chain is the same but old chain has slight colour fade.

As it happens, I’ve resolved the issue by slightly rotating the cams as required using the hexagonal ring. This is actually mentioned in the manual I just found for the 2003 G35 coupe. Just have to be very careful you’re not turning the cams to break a valve.

I also realised each intake and exhaust cam sprocket marks align with subtle bumps formed on the inside of the rear chain case at TDC. This let me determine that the LHS cams were slightly off mark while the RHS were on mark. Made it easy to choose which one to turn to fit the chain and also have some confidence you’re within reasonable margin of safety as you move the cams a degree or two.
  • 1 month later...
  • 1 month later...

@scotty nm35hey mate completely of topic - I’m trying Message you on sau but can’t get a hold of you re: injector wiring for c34 rb25det - can you pm me so I can’t get in contact 

  • 4 months later...
2 hours ago, Riccardo said:

Can anyone help where too buy one of these timing chain kits for the Vq25dd stagea. Can only find on ebay. Can you only get them from Nissan? 

No you can also get them from Ebay. Have you tried messaging Nicko or Hutchwilco?

  • 1 month later...
On 04/03/2020 at 6:16 PM, Riccardo said:

Can anyone help where too buy one of these timing chain kits for the Vq25dd stagea. Can only find on ebay. Can you only get them from Nissan? 

You can buy those kits in your local Nissan dealer but you will have to wait roughly for about 6 weeks to get all spares parts delivered from Japan, dont think any dealer across the country would have those kits stock up.

Anyway I've purchased my parts in Dubai long time ago and a wallet damage was around $2000 for a full cart of extra parts you would also need if you pop her cherry for a full replacement of any worn/defected internal parts.

 

  • 2 weeks later...
On 3/4/2020 at 11:01 PM, KiwiRS4T said:

No you can also get them from Ebay. Have you tried messaging Nicko or Hutchwilco?

How's it going?

Just came across this: they also sell the parts

 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I have been being VERY quiet about what you're alluding to, as it is something that ticks me off... The number of cars from factory that run coil overs is HUGE! Most of them these days do... The other part that annoys me, is people saying "Well all the incabin adjustable suspension is illegal by blah blah blah"... If that's the case, then why can I buy a car brand new that can do it if, FULL STOP in cabin adjustable suspension is illegal...   Also, I could just chuck some aftermarket shocks in my car, throw the stock springs on, after my blue slip, dump my super low springs back in. Same shock and spring style setup... Hell, they could also be the same colour springs etc.     I'm voting, BlueSlipper didn't want to touch the above car for some reason. Whether it be some sort of bias against the car, the owner, them maybe having previously done dodgy shit and now they're being super careful in case they get slapped in the face by the Gumbyment again... Find a new blueslip place.   And can confirm as you had said, yes there are holy bibles of vehicle heights, and all sorts of other suspension stuff. Heck your run of the mill mechanic, and tyre shop has access to all of that stuff. It's how they do wheel alignments...
    • Funny story Heading to Sydney this morning on the HWY there was some slow traffic, so I gave it the beans and midway through my overtaking "power run" I lost all power It seems that I missed a hose clamp,  and the MAF and filter went WiFi To make this more problematic, the little tool kit that lives in the boot, is sitting in the sun room at Goulburn......LOL Luckily for me I found a bit of steel on the side of the road that could be used like a rusty and bent flat head screw driver to tighten it up enough that it got me into Sydney, it is now all tight like a tiger with the aid of a 8mm socket Note to self: Use my brain and double check stuff, and always keep that little tool kit in the car for when I have a brain fart
    • Oh, and as for everyone with their fuel economy changes, I switch between E10 and 98 in the company car. Even do when I had personal cars that could run on E10. You know what changed my fuel economy in any noticeable way? How I drove, and where I drove. Otherwise, say on full tanks of just back and forth from work only (So same trips, same sort of traffic), couldn't notice a difference that I can correlate to the type of fuel in use. In the current vehicle, that's over 42L of USABLE fuel. While 98 is all "more energy dense", it also has higher knock resistance as it takes more energy to get it to ignite too. The longer hydrocarbons, typically more tightly bound. So running the same ignition map, can also produce less power, if there isn't enough time to get it all burnt through properly, as yep, the flame propagation speed is different from lower octane fuel to higher (Higher has a lower flame propagation, due to the more tightly bound and harder to self ignite funs. This is also typically where, a vehicle that is designed purely to run on 91 (Whether it be E10 or normal 91) usually sees absolutely no real world difference in fuel economy for the normal man, woman, or dog.
    • We've got some servos around me that have 91 with E10, 91 (no E10), 95, and 98. At those stations the change from 91 E10 to 91, is typically around 8c/L.   But lets not get started on the price of fuel in Oz. It's ridiculous. All the service stations around me, bar one, the price of fuel has been over the $2 mark per litre for the cheapest, 98 being around $2.45. That one service station is a CostCo, fuel from it comes from the same refineries, and makes no pitstops, it runs great, including the 98. In fact, I've had no issues on CostCo fuel, but plenty of issues at other stations!. The CostCo fuel, was $1.65 roughly this week for 94 with E10. $1.88 for 98. Servos directly across from it, $2.10 for 91 E10, and $2.48 for 98. The part I had to laugh at? If I drive multiple HOURS away from Brisbane, say out near Nanango, or Kingaroy, or even out to Goondiwindi, the price of their fuel, is the same as what it is at the CostCo... Oh, and that BP servo at Goondiwindi is HUGE and goes through epic turnover of fuel, so it's not sitting there for weeks going to shit. And what blows me away, my mate is one of the people who drives the Fuel Tanker all around QLD, delivering to all those places. At the same company his previous role was doing the "local haul" deliveries... Same truck, same driver, same pickup point it all comes from. So you tell me, how the hell it is 60c/L CHEAPER for fuel, when nearly all else is equal, except they require a B-Double to drive half a day out of Brisbane, and half a day back, every second day, compared to the delivery that can be under 30 minutes drive from the fuel pickup point... Not to mention, go five blocks down the road, and Ampol to Ampol will vary 30c/L... And I've had this conversation with my mate... The way it's priced, is just typical, pure and utter rubbish... He also does runs from Brisbane, to all over QLD, down to Newcastle, Sydney, Nowra, Melbourne, Geelong, and even out to parts of the NT depending on the companies needs. His main stuff is all the longer distance away from home for a few days at a time, then when he's back, he loves to just pickup extra shifts wherever he can in whichever truck, hence all the weird different places.   Oh, as for getting E10 into all the fuels in Australia... It was very quickly highlighted, that we don't have enough biomass available to use to make E10 sustainably like they require, and it would dramatically cut into our, and the worlds food chain supply...   I vote we all just start running on liquid methane gas... Plenty of that just getting tapped off at tips from underground decay... (Note, this is pure just stupid commenting. I could very easily highlight the reasons its not a good idea especially on scale...)
    • Am I correct in assuming that the R35's are getting the classic skyline haircut off the odometer?  Quick search on carsales, there are 33 08 and 09 GTR's for sale, only 2 of them have more then 100,000km's on them (116,075 and 110,000 respectively).  And somehow there are about 25 for sale with around 60,000kms? Looks like the classic skyline haircut to me =/
×
×
  • Create New...