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Location:
brisbane
Registered:
July 2004
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18rgu timing chain and tentioner help
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Fri, 23 July 2004 04:43
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hey... i got a 18rgu and just had the head done and all the shims done.. and i still got a lot of overhead noise..yes there is oil in it,, so im guessing the timing chain is loose..i was told there were 3 different types of tensioners for the timing chain.. WHY??? whats the difference.. a little helpful hint pls.. cheers.
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Location:
Rocklea qld
Registered:
February 2003
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Re: 18rgu timing chain and tentioner help
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Fri, 23 July 2004 09:38
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It could be either your chain is stretch, your guides are worn or your tensioner isnt working. Lots of $$$ no matter what it is.
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Location:
Brisbane
Registered:
October 2002
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Re: 18rgu timing chain and tentioner help
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Fri, 23 July 2004 11:24
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fi u have the mechanial tensioner {not oil pressure driven}, then make sure its tight
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Location:
Bundaberg
Registered:
June 2005
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Re: 18rgu timing chain and tentioner help
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Wed, 29 June 2005 07:31
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Newbie, but I figure this is the appropriate thread for my issue.
Have a '78 Celica RA28 Liftback with a Yamaha 18RG-U head on an 18RC block. The timing chain tensioner is a screw-in affair and the housing cracked and later became two parts of the same.
A mate up here in Bundy machined up a housing after about four tries and it's working ok, so far, but I'd like to locate and purchase new or aftermarket parts, preferably of competition strength.
Can anyone suggest an outlet in Brisbane as we're driving down for a week in August. Or failing this, somewhere else.
Cheers
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Location:
adelaide
Registered:
May 2002
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Location:
Brisbane
Registered:
October 2002
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Re: 18rgu timing chain and tentioner help
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Wed, 29 June 2005 14:17
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what exactly are you after, i have bits
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Location:
Bundaberg
Registered:
June 2005
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Re: 18rgu timing chain and tentioner help
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Wed, 29 June 2005 23:25
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@ BlackRA28, That'd be right eh!  Well thanks for your reply fellas.
@ Mr DOHC, I'm after the housing itself or the whole tensioner assembly. I've seen three different tensioner locations so far in wreckers yards. This tensioner is located above the distributor and slightly rearward. I can supply images if there's any confusion.
Here's a bit of recent history. 
We've actually acquired this car as a freebie, my daughter's Kiwi ex-boyfriend can't afford to ship it over to his homeland. I figure it's justice as she had the brains to finally leave the abusive idiot, but she's in NZ 'cause he stole her away after having too many traffic fines in Oz.
Managed to tune the damn thing, once I found some info on those twin Mikunis and advanced the timing a tad. It's had a cam grind as well and won't idle under 1100rpm, but it goes like the clappers of hell.
Didn't handle too well when we first drove it as two tyres were sufferng belt separation and he drove it up from Brissie like this. He put a centre console in to locate his cassette player, but the handbrake was in the way of the rear tray, so what'd he do?  Why he reefs the handle sideways to clear it and promptly tears the handle housing for about 30mm. Naturally the unit wasn't functioning, so I welded a brace on and it's fine now. 
[Updated on: Wed, 29 June 2005 23:39]
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