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1.8 and 2.0's...interference?

 
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Old 07-16-2008, 01:02 AM
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1.8 and 2.0's...interference?

Are the 1.8 and 2.0s out of the accord and prelude interference motors? I could have sworn all honda engines were interference.
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Old 07-16-2008, 01:30 AM
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Hey wzup? Found this info earlier regardin your question, check it out

"There are automobile engines of non-interference design, but you won't find many Honda products using them. A non-interference engine is one in which the pistons go up and down in their own private space, and the valves open and close in their own private space. You can turn such engines over with the cam disconnected from the crankshaft and it won't do any harm.

Interference engines however, depend on accurate timing for their operation. The piston coming up the bore occupies space at the top of its rise that was a millisecond before occupied by an open valve. Worse, in some dual overhead cam engines, an opening intake valve occupies part of the space just vacated a millisecond earlier by a closing exhaust valve. So what keeps all these parts from colliding? Your timing belt, that's what! If that sucker breaks, or even jumps a tooth, you've got big expensive trouble, almost instantly. At 8,000 rpm your pistons are going up and down the cylinder bores 133 times a second! If they encounter still-open valves because the timing belt just slipped or broke, they'll bend the valve over like a clinched nail into the soft aluminum of the head, busting themselves into pieces in the process!

There are engines out there that are technically non-interference, but once a bit of carbon builds up on the piston top and valves, they become interference. That's how close the tolerances can be.

So the bottom line here is change your timing belt when your service manual says you should do so, or pay some mechanic muy dinero to put your engine back together. As a mechanic friend of mine used to quip about such repairs, "It was a peach-basket case!". His implication was that the owner had to pick up his engine parts off half a mile of road and bring them into the shop in a peach basket. If you don't want to be a peach-basket case, change your timing belt when you're s'posed to!

For most older Hondas the change interval is every 90,000 miles (144,000 km) or every 72 months (6 years) whichever comes first. From about 1998 up, the interval was increased to 105,000 miles (168,000 km) or 84 months (7 years). These figures are for OEM belts. Aftermarket belts may not be made as well or last as long."
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Old 07-16-2008, 04:30 AM
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I know for a fact that the Prelude engines are, and I'll back you up on the thought that all Honda engines were...but I can't confirm the Accord engines.
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Old 07-16-2008, 11:50 AM
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Thats what I thought too, thanks guys!
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Old 07-16-2008, 11:54 AM
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Old 07-16-2008, 12:05 PM
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No I was just wondering because someone said they were NOT interference and I was confused.

What about the A motors are those interference as well?
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Old 07-16-2008, 01:56 PM
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Quote:
Originally Posted by 99PreludeSh View Post
No I was just wondering because someone said they were NOT interference and I was confused.

What about the A motors are those interference as well?
I'm pretty sure they are, I was looking around the internet and I found a couple places say that all Honda engines are Interference
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