1.7 timing belt broken

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Ride_on
Posts: 2262
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

1.7 timing belt broken

Post by Ride_on » 22 Nov 2013 12:30 am

A friends 340 1.7 timing belt just broke while moving the car onto a transporter for banger race pruposes, is the engine likely to be damaged?
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

CBA
Posts: 1071
Joined: 24 Mar 2010 02:14 am

Re: 1.7 timing belt broken

Post by CBA » 22 Nov 2013 01:44 am

Yes, it is an interference engine. If it snapped when getting it up the ramp (Lots of revs maybe?) then it will be toast. There's nothing to give, due to the OHC design. Bent camshaft, snapped/bent valves, cracked piston, warped head... the lot. It might be ok with just a fresh head, and also give opportunity to put on a better head if you're lucky. The dynamics between steel valves and alloy pistons+OHC with hydraulic tappets though - not looking very hopeful.

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Chris_C
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Re: 1.7 timing belt broken

Post by Chris_C » 22 Nov 2013 10:19 am

It isn't hydraulic tappets, they are solid. I've not seen a 1.7 with a failed belt, but worth just lifting the cam cover, it's super easy on that engine and you'll see what issues there are.
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast

classicswede
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Re: 1.7 timing belt broken

Post by classicswede » 22 Nov 2013 11:42 am

Ride_on wrote:A friends 340 1.7 timing belt just broke while moving the car onto a transporter for banger race pruposes, is the engine likely to be damaged?
Is he still your friend if banger racing a 340? :lol:
Dai

Please email me directly on dai@classicswede.co.uk

http://www.classicswede.com

phone/text 07824887160

Web shop http://www.classicswede.co.uk/

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Ride_on
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Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: 1.7 timing belt broken

Post by Ride_on » 24 Nov 2013 06:16 pm

Yes there have been some comments about destroying a good 340 saloon, but I checked it out and its good on the outside but some serious rust in the usual places. Still probably easier to restore than mine. He's really 200/700/900 abuser.

He gave the NI crew a choice of bits to a virtually bare shell.

Anyway 6 bent valves apparently, on original belt!
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

MCHUDD
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Re: 1.7 timing belt broken

Post by MCHUDD » 24 Nov 2013 07:05 pm

Hi all.
Have to agree with Ride_on. I also check it out and it was rotton :(
Cheers Mark.
sm4 sm4

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variomaticus_dl
Posts: 43
Joined: 28 Jul 2013 05:02 pm
Location: Marburg, Germany

Re: 1.7 timing belt broken

Post by variomaticus_dl » 27 Nov 2013 12:21 pm

my Renault-mechanic-Friend told me:

120000km or 4 years.

I changed it 4 weeks ago because I didn't know the history.

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