Oil Grade And Cambelt 1.8Vvti - Servicing - MX5Nutz Forum

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Oil Grade And Cambelt 1.8Vvti


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#1 ErroneousMx5

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Posted 28 July 2020 - 12:39 PM

Question 1.
After looking around online and being advised 0w40, 5w40 and 10w40 I went for middle of the road and bought 5w40 fully synth oil... Now it seems everyone is saying 10w40 only? Is this going to be an issue?

Question 2.
I've now been told I wont be back at work in August either (ffs) so am considering doing the cambelt change myself on yhe drive.
I'm probably going to by the full kit from Mx5 parts to save faffing about online for the next 10 days. I'll also replace the camshaft o-rings.
I can't find any guides anywhere for the vvti engine, so anything I need to be aware of? Anything scary? Am I opening myself up to a nightmare job?
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#2 atlex

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Posted 28 July 2020 - 08:47 PM

If you're in a snowy place in winter (scotland) I'd _recommend_ 5w40, otherwise ,10w40 is fine. I run a really high grade 5w40 even in a warmer place but 10w40 would do the job just as well and also be cheaper.

 

cambelt.. it isn't a nightmare if you're well prepared and patient

 

but you should look at the guides before starting it. you may want a cam gear locking tool and a half decent toolkit and a perhaps a new cam cover gasket set and also the silicone RTV for the cam lobe arches and and and..

 

( if you're not the most accurate and patient person I'd ask someone else to do it. )

 

I suggest looking at the Car Passion Channel's guide :-) greg peters did a decent one.


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#3 ErroneousMx5

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Posted 28 July 2020 - 09:02 PM

I've got nothing but time now, unfortunately!
I've got an engineering background so I'm quite confident in tackling it, just wanted to make sure there's nothing too specific I should be aware of before getting underway. There's nothing worse than fucking something up just for people to say "Yeah, I could have told you that was going to happen".
The mx5parts kit comes with cam cover gasket and I've got some liquid gasket I can put on the corners or the cam sections 👍🏻
Thanks for the advice.
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#4 Shadowraven

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Posted 29 July 2020 - 09:59 AM

cam belt isnt hard, just double check the timing, then check it again before you put everything back together. Also, dont forget to use a small dot of sealant on the valve cover where it curves for the cams (you'll see what I mean). There's nothing different about the process for the vvt except for when removing the valve cover (as the vvt is attached). 


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#5 boosted

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Posted 29 July 2020 - 12:07 PM

Run engine around twice by hand then check timing...the little coolant pipes on front of engine dont really like being distubed worth getting new and clips.
Book time 2.5 hours took me 7.5 lol. Defo worth moving pas pump out of way the 2 bolts on the waterpump cooling tower are very ackward to get too. May as well do crank seal as well...gear on mine took an hour to get off.
Some engine degreaser and rags to clean behind and all the covers. Its a satisfying job just time no special tools. I used an mx5 part kit and spot on.

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#6 ErroneousMx5

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Posted 29 July 2020 - 12:19 PM

Thank you 👍🏻 brilliant help. Sometimes knowing these little niggles in advance helps prepare for the task in hand! Haha.
I'm off to Dunsfold on the 14th so will start it after that in case I run into anything that puts it out of action while I wait for unexpected parts etc.
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#7 boosted

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Posted 29 July 2020 - 12:25 PM

Removing spark plugs too helps as no compression so stays on marks. Watch a good youtube guide a few are a bit vague youll know when you find a good 1 as it will hzve more detail.
I did mine with rad in..as id already flushed coolant prior found plenty of room.
If your old like me knee pads help too

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#8 ErroneousMx5

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Posted 29 July 2020 - 12:42 PM

Thanks @Boosted 👍🏻 I've actually just watched The Car Passion Channels video as suggested by @Atlex, it's on a mk1 but seems similar enough to be a lot of help.
I've got a kneeling pad at the ready! Haha, I always say I'm going to be the youngest person to ever die of old age 😅 still here though!
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