Congratulations to vtecmec for winning May/June's Lude Of The Month, with his DIY Turbo BB1 build.

>>> Click Here For Profile <<<

Image

Cambelt Change

Engine/Gearbox questions and discussion
User avatar
pencil
Posts: 66
Joined: Thu Nov 22, 2018 9:13 am
My Generation: 5G
Location: Kent
Has thanked: 10 times
Been thanked: 6 times

Cambelt Change

Post by pencil » Thu May 02, 2019 1:44 pm

No worries, thanks for looking. It's the other end actually by the cam pulleys but might well be the same part. I've seen a set of both on Ebay for a decent price so I'll go ahead and get that.

Quick (ish) question that's been bugging me - with the cam pulleys lined up the crank appeared to be off by half a tooth, which obviously shouldn't be possible. Should I be concerned about that? This was by the marks on the crank sprocket.

Image

Image

Looking through the timing window instead, I can see the pointer but no marks at all. More powerful light needed??

Hondash showed 35 degrees of ignition timing - but I guess this could have been advanced by a previous owner to compensate for an old belt? Or Hondash shouldn't be trusted on this, especially with a suspected vac leak? Or am I talking complete balderdash and the belt is still a tooth off?

As I mentioned apart from no power below 2000rpm the engine appeared to rev sweetly.

Your continued help is as ever greatly appreciated.

User avatar
vanzep
Supporter 2016
Posts: 6960
Joined: Sun Jan 29, 2012 6:38 pm
My Generation: 4G
Location: Edinburgh
Has thanked: 251 times
Been thanked: 392 times

Cambelt Change

Post by vanzep » Fri May 03, 2019 1:38 pm

newkid should be able to help you with timing marks after doing his belts the other day.

glad youve been able to source a cam cap on ebay ;)
1996-2000 1993 EG9 Blue Civic 1.6 Vti - Traded in against the BB4
2000-2019 1994 2WS BB4 Milano Red JDM Prelude Si VTEC LSD

2015 on > 1991 4WS BB1 Phantom Pearl Grey JDM Prelude Si VTEC LSD
2021 ON > 1998 2WS BB6 White Pearl JDM Prelude Si VTEC

User avatar
pencil
Posts: 66
Joined: Thu Nov 22, 2018 9:13 am
My Generation: 5G
Location: Kent
Has thanked: 10 times
Been thanked: 6 times

Cambelt Change

Post by pencil » Fri May 03, 2019 1:49 pm

Yes I was surprised and delighted to see what I needed on there.... let's see what I can break next!

newkid would love to hear from you...

newkid
Supporter 2016
Posts: 2665
Joined: Thu Feb 23, 2012 8:28 pm
My Generation: 4G
PSN GamerTag: spaz_ma_taz
Location: Edinburgh
Has thanked: 13 times
Been thanked: 50 times

Cambelt Change

Post by newkid » Fri May 03, 2019 2:27 pm

Can you put the crankshaft to tdc and then take a pic of both.

Reason I ask is your cams are also out in that pic you have up.

User avatar
pencil
Posts: 66
Joined: Thu Nov 22, 2018 9:13 am
My Generation: 5G
Location: Kent
Has thanked: 10 times
Been thanked: 6 times

Cambelt Change

Post by pencil » Fri May 03, 2019 2:48 pm

With the aid of a new brighter torch I've found the marks on the flywheel, so that will help greatly.

The cams were locked in place with pins through the holes so they can't have been out by more than a hair. The angle of the photo isn't great - why do you say they're out? (Not doubting you, genuine question :) )

newkid
Supporter 2016
Posts: 2665
Joined: Thu Feb 23, 2012 8:28 pm
My Generation: 4G
PSN GamerTag: spaz_ma_taz
Location: Edinburgh
Has thanked: 13 times
Been thanked: 50 times

Cambelt Change

Post by newkid » Fri May 03, 2019 4:24 pm

Cams are pointing down, should be in line with the head like this

Image

Once crank back to tdc position your exhaust cam will be out by a tooth and inlet cam should be in correct position.

I'm only going by what I see in the photos.

User avatar
pencil
Posts: 66
Joined: Thu Nov 22, 2018 9:13 am
My Generation: 5G
Location: Kent
Has thanked: 10 times
Been thanked: 6 times

Cambelt Change

Post by pencil » Fri May 03, 2019 4:49 pm

Thanks Newkid. It's a pretty rubbish photo tbh (especially considering I'm a photographer :lol: ) but I'll be careful to make sure they're both straight with the head.

3rd time for the win, as soon as it stops raining...

Post Reply

Return to “Engine / GearBox”