Are our motors interference engines or not?

RamAir · 01-11-2011, 02:48 PM

Like the title asks. Well are they???? Cuz I know our CR Is 9.0.

Thanks guys! :2tup:

Sarris · 01-11-2011, 04:30 PM

Yes. Piston/valve crash does happen.

RamAir · 01-11-2011, 06:21 PM

Darn! Are you replying from your own findings? I am guessing yes cuz the face at the end.

alantf · 01-12-2011, 05:16 AM

o.k.......... what's an interference engine? :??:

RamAir · 01-12-2011, 05:34 AM

Quote:

Originally Posted by alantf

o.k.......... what's an interference engine? :??:

You do know that this does not help in answering my question right??? :lol:

BUhahahaha just joking! :neener:

Sorry mate had to have a bit of fun with you. Back on track now and good question.

An "Interference engine" is what an engine is called when the valves can touch the pistons in the motor soooo for example in my tercel 1998 it is a none interference motor. So if I were to take the timeing belt off and spin the motor round and round nothing would happen, all is well and I am as happen as a clam! But in an interference engine if you where to do the same the crankshaft would stop spining once the piston top colidded with a valve and could cause damage even at a very low speed.

Hope this answers your question :2tup:

RamAir · 01-12-2011, 05:35 AM

Now why I ask this is because, wellll is it posible to raise our CR to 10.1????????????/

RamAir · 01-25-2011, 04:09 PM

Welll Anyone?

blaine · 01-25-2011, 04:43 PM

If you get the head. planed by a machine shop,that will raise the compression ratio.Is there enough valve clearance to plane the head is a question I cannot answer.If your interested in increasing the c.r to gain power, IMO it would be very small,and not worth the problems you will have with pinging & reliability issues.Although it is a good topic for discussion.
:??:

Water Warrior 2 · 01-25-2011, 06:08 PM

Another drawback to planing the head. There will be a bit more slack to take up in the cam chain and might shorten it's life span. I personally wouldn't change a thing on the GZ. It is a bullet proof design and well proven. Learn to appreciate the bike for what it is, hone your riding skills on it and someday move up to a bigger bike.

RamAir · 01-28-2011, 09:09 PM

I was thinking a slightly longer connecting rod :whistle:

01-11-2011, 02:48 PM	#1
RamAir Senior Member Join Date: Aug 2009 Location: Toronto Canada Posts: 165	Are our motors interference engines or not? Like the title asks. Well are they???? Cuz I know our CR Is 9.0. Thanks guys! :2tup: Login or Register to Remove Ads
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01-11-2011, 04:30 PM	#2
Sarris Senior Member Join Date: May 2007 Location: New Port Richey, Florida USA Posts: 1,348	Re: Are our motors interference engines or not? Yes. Piston/valve crash does happen. __________________ Prudent riders live longer than moron riders.
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01-11-2011, 06:21 PM	#3
RamAir Senior Member Join Date: Aug 2009 Location: Toronto Canada Posts: 165	Re: Are our motors interference engines or not? Darn! Are you replying from your own findings? I am guessing yes cuz the face at the end. Login or Register to Remove Ads
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01-12-2011, 05:16 AM	#4
alantf Senior Member Join Date: Nov 2008 Location: Tenerife (Spain) Posts: 3,715	Re: Are our motors interference engines or not? o.k.......... what's an interference engine? :??: __________________ By birth an Englishman, by the grace of God a Yorkshireman.
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01-12-2011, 05:35 AM	#6
RamAir Senior Member Join Date: Aug 2009 Location: Toronto Canada Posts: 165	Re: Are our motors interference engines or not? Now why I ask this is because, wellll is it posible to raise our CR to 10.1????????????/
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01-25-2011, 04:09 PM	#7
RamAir Senior Member Join Date: Aug 2009 Location: Toronto Canada Posts: 165	Re: Are our motors interference engines or not? Welll Anyone?
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01-25-2011, 04:43 PM	#8
blaine Senior Member Join Date: Feb 2010 Location: P.E.I. Canada Posts: 3,784	Re: Are our motors interference engines or not? If you get the head. planed by a machine shop,that will raise the compression ratio.Is there enough valve clearance to plane the head is a question I cannot answer.If your interested in increasing the c.r to gain power, IMO it would be very small,and not worth the problems you will have with pinging & reliability issues.Although it is a good topic for discussion. :??: __________________ If at first you do succeed, try not to look surprised.
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01-25-2011, 06:08 PM	#9
Water Warrior 2 Senior Member Join Date: Dec 2006 Location: Squamish B.C Canada Posts: 11,409	Re: Are our motors interference engines or not? Another drawback to planing the head. There will be a bit more slack to take up in the cam chain and might shorten it's life span. I personally wouldn't change a thing on the GZ. It is a bullet proof design and well proven. Learn to appreciate the bike for what it is, hone your riding skills on it and someday move up to a bigger bike.
	0

01-28-2011, 09:09 PM	#10
RamAir Senior Member Join Date: Aug 2009 Location: Toronto Canada Posts: 165	Re: Are our motors interference engines or not? I was thinking a slightly longer connecting rod :whistle:
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