Sorry guys, this is a gasser question

[rabbitman]

I saw a vid on youtube showing a mk4 2.0 8V that broke the timing belt and supposedly it bent the valves, so I started wondering what vdub engines really are interference engines.

I think I know that all the early 1.5 1.6 1.7 1.8 8V gassers aren't, maybe even the early 2.0 8V.

The 1.8 and 2.0 16V's are interference right?

What about the mk3 and mk4 2.0L 8V? For this one I searched the web and found many differing opinions but it appeared like people were posting without a clue.

I know the 1.8T will smash valves.

What about the V6's, 2.7T, 2.8 12 and 30 valve?

I'm pretty sure the VR6's all interfere.

And I don't need to hear about the diesel's

Sorry for the weird question I just got curious and had to know and this is the place to go since most of you have delt with gasser dubs too. Thanks

[theman53]

My friend Troy said that he doesn't ever want to break a TB in his 1.8. He has a rediculous cam in it and said if the TB slips/breaks it will be bad for him. So I guess it depends since there are a lot of cams out there for the gassers and not so many for the diesels, some gassers could become interference fit. His 80 Rabbit also does somewhere in the 12 second 1/4 mile so his cam may be a little more nuts than most.

[maxfax]

As per Alldata

Engine   Recommended Interval
1.5L* (1)
 
1.6L* (1)
 
1.7L   (1)
 
1.8L* (1)
 
1.8L* Turbo  (12)
 
1.9L* (1)

1.9L* TDI Diesel  (16)
 
2.0L* (12)
 
2.1L (1)
 
2.2L (1)
 
2.5L* (1)
 
2.8L* (22)
 
4.0L* (1)
 
4.2L* 80,000 Miles.
 

* - Interference engine.

(1) - Manufacturer does not recommend a specific maintenance interval.

(12) - On 2000–07 models, inspect at 60,000, 80,000 & 100,000 miles, replace timing belt & tensioner every 105,000 miles. On all other models, manufacturer does not recommend a specific maintenance interval.

(16) - On 1997–98 models, inspect every 10,000 miles, replace timing belt & tensioner every 60,0000 miles. On 1999 1.9L TDI engines, inspect every 10,000 miles, replace every 40,000 miles. On 2000–01 1.9L TDI engine, w/automatic transmission, replace timing belt every 40,000 miles. On 2000–01 1.9L TDI engine, w/manual transmission, replace timing belt every 60,000 miles. On 2000–01 1.9L all TDI engine, replace timing belt tensioner every 105,000 miles. On 2002 models, replace timing belt & tensioner at 80,000 mile intervals. On 2003–07 models, replace timing belt & tensioner at 100,000 mile intervals.

(22) - On 1999 models, replace timing belt & tensioner every 90,000 miles.  On 2000-06 models, replace timing belt & tensioner every 105,000 miles,  On all other models, manufacturer does not recommend a specific maintenance interval.

[rabbitman]

Thanks that's a perdy good list . Is the 2.1L and 2.2L 5 cylinders then? I thought for sure the 1.8L wasn't interference but what do I know

[Syncroincity]

I'll bet the 2.1L refers to the Wasserboxer flat 4 in the Vanagon. No belt... watercooled Beetle motor, basically. Produced up through '92.