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Dec 28, 2008 14:08:21 GMT
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reet ive seen this mentioned and not quite sure i understand.
i take it the difference is summit to due with them the cam belt snaps???
and if I'm correct how about a list of em too?
dan
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'90 Audi B3 Coupe 2.3 Auto [gone] '92 Audi S4 Avant 2.2 AAN Turbo Auto [gone] '93 Audi 80 Avant 1.9TDi [gone] '96 Audi A4 Avant 2.6 Quattro [gone] '97 VW T4 1.9td LWB [gone] '03 Skoda Octavia 1.9TDi [gone] '05 VW T5 Shuttle LWB 1.9TDi '15 VW Caddy Maxi Kombi 1.6TDi
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Dec 28, 2008 14:24:16 GMT
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Here you go: If the timing belt, or chain, breaks on a non-interference design, there is enough clearance between the pistons and valves to prevent damaging contact. An interference design does not have sufficient clearance between those parts and engine damage would result from a broken timing belt or chain. Of course, if you're really gunning it and it's an old engine, there is the chance you can still bust something if it falls apart at a good few thousand RPM! Being a non-interference engine isn't a cast-iron guarantee of safety! There's some listed here: www.motorwatch.com/automotivebible/auto_motive_bible/TimingBelts.pdf
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Last Edit: Dec 28, 2008 14:25:44 GMT by Lewis
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Dec 28, 2008 14:26:35 GMT
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cool so what engines do we know are non-interference?
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'90 Audi B3 Coupe 2.3 Auto [gone] '92 Audi S4 Avant 2.2 AAN Turbo Auto [gone] '93 Audi 80 Avant 1.9TDi [gone] '96 Audi A4 Avant 2.6 Quattro [gone] '97 VW T4 1.9td LWB [gone] '03 Skoda Octavia 1.9TDi [gone] '05 VW T5 Shuttle LWB 1.9TDi '15 VW Caddy Maxi Kombi 1.6TDi
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Dec 28, 2008 15:05:31 GMT
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gm 1300 8 valve OHC as fitted to astra nova etc.. (16v smashes valves AND guides) Ford Pinto all variants apart from 1.8E as head chambers are different (you can be lucky though)
these are the only ones I know of..
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Dec 28, 2008 15:34:20 GMT
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isn't the 2.0 Pinto one? all the rest clobber valves?
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The Doctor
Club Retro Rides Member
Posts: 3,434
Club RR Member Number: 48
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non interference enginesThe Doctor
@thedoctor
Club Retro Rides Member 48
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Dec 28, 2008 15:47:08 GMT
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Toyota 1.6 16V (4A-FE, 4A-GE) are non interference (as long as the head isn't skimmed)
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Raoul Duke
Part of things
Posts: 990
Club RR Member Number: 117
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non interference enginesRaoul Duke
@raoulduke
Club Retro Rides Member 117
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Dec 28, 2008 15:55:35 GMT
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Toyota 2.0 á la Celica & mk1 Rav4, too.
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...a redder shade of neck on a whiter shade of trash...
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tux
Part of things
Fat Bloke
Posts: 417
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Dec 28, 2008 15:57:59 GMT
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2 litre Audi unit fitted to Porsche 924
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Dec 28, 2008 16:25:24 GMT
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Volvo B18 & B20 as fitted to Amazon & P1800 is a "safe" engine. If the timing gear lets go the engine just stops. A lot of these engines have by now been fitted with steel timing gears (no belts or chains on this oldie which prevents the danger of the original fibre gears falling apart, at the expense of a little noise. OK, make that MORE noise!
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Dec 28, 2008 16:30:20 GMT
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I heard the 1.6 + 1.8 in the mx5 are non interferance. Some Fiat Pandas have them too.
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1986 BMW 635csi coupe - No, I'm not a drug dealer. 1997 Mazda MX-5 1.6i - No, I'm not a hairdresser either.
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Dec 28, 2008 16:55:16 GMT
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2 litre Audi unit fitted to Porsche 924 what else were these fitted too?
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'90 Audi B3 Coupe 2.3 Auto [gone] '92 Audi S4 Avant 2.2 AAN Turbo Auto [gone] '93 Audi 80 Avant 1.9TDi [gone] '96 Audi A4 Avant 2.6 Quattro [gone] '97 VW T4 1.9td LWB [gone] '03 Skoda Octavia 1.9TDi [gone] '05 VW T5 Shuttle LWB 1.9TDi '15 VW Caddy Maxi Kombi 1.6TDi
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Dec 28, 2008 17:14:48 GMT
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2 litre Audi unit fitted to Porsche 924 what else were these fitted to? volkswagen LT vans The diesel engines clobber the valves hard enough to snap the cam tho 2.0 pinto is safe, 1.6 and 1.8 interfere (although not as badly as some, they often still run after a belt "incident") Essex and cologne v6 are also safe, and have the same sort of fibre gears as the volvo engines mentioned.
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To get a standard A40 this low, you'd have to dig a hole to put it in
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Dec 28, 2008 17:20:36 GMT
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Fiat Panda Fire engine
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Dec 28, 2008 17:35:14 GMT
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i have autodata on CD so if anyone wants to know if there engine is an interference engine or non interferece jusy hola andy 1983 xr3 is an interference engine i found that out at 18 when mine bust lol
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Siert
Posted a lot
Posts: 1,104
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Dec 28, 2008 17:38:50 GMT
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Toyota 1.6 16V (4A-FE, 4A-GE) are non interference (as long as the head isn't skimmed) If I'm not mistaking the 1.3 8V (2A) is also non-interference but the 1.3 12V (2E) derived from it isn't. The Doctor: How about the more modern 1.3 (4E-FE etc) ?
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topcat
Part of things
Posts: 289
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Dec 28, 2008 17:44:50 GMT
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The good old a-series is I believe a non interfierence engine.
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Dec 28, 2008 18:15:45 GMT
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Almost all Toyota's pre 2000 are clearance, only VVTI are'nt
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Resident Toyota Geek Current Fleet: HDJ81 Landcruiser, GZ20 Soarer, JZX81 Cresta
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The Doctor
Club Retro Rides Member
Posts: 3,434
Club RR Member Number: 48
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non interference enginesThe Doctor
@thedoctor
Club Retro Rides Member 48
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Dec 28, 2008 18:15:51 GMT
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Toyota 1.6 16V (4A-FE, 4A-GE) are non interference (as long as the head isn't skimmed) If I'm not mistaking the 1.3 8V (2A) is also non-interference but the 1.3 12V (2E) derived from it isn't. The Doctor: How about the more modern 1.3 (4E-FE etc) ? haven't got a clue, but indeed the 2E isn't they bend all 12 valves when the belt snaps ;D
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Dec 28, 2008 18:28:56 GMT
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1.8 OHC GM units are non interferance. As those fitted to mantas.
My belt slipped once and wouldnt run. Took me age find out why it wouldnt run. Just retimed it and away she went!
Not sure about the more modern 1.8 and 2.0 8v vauxhall engines but id hazzard a guess they're the same.
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1987 Opel manta GT 2.0 16v 1976 Opel manta s project 1985 Opel Rekord E 2.2i 1992 Vauxhall Carlton 2.3TD 1989 Mercury Grand Marquis 2005 Landrover discovery 3
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Dec 28, 2008 19:39:16 GMT
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VVTI toyota's are usually chain driven though, so less chance of breakage. MX5 (Mk1 and Mk2, not sure about 3's) engines are also non interference, not strictly retro but still worth knowing
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