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Post Posted: Sat Oct 23, 2010 10:08 am 
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i was always pretty sure that g16bs are non interference engines?
for this reason i have been putting of the cam belt. but if somebody proves they are not then id better get around to doing it.

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Post Posted: Sat Oct 23, 2010 10:51 am 
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All factory G series motors are free spinners AFAIK.

I've seen a G 16B break a timing belt and I can assure you it was a free spinner because it took us about 6 hours to figure out why it wouldn't run....


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Post Posted: Sat Oct 23, 2010 11:19 am 
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hmmm ok, this is good to know. i have a haynes manual, i have had a look but cant find anything info on it being a interference engine or not. any ideas on where i can?

i was always told that it was just the G13 engines that were non-interference engine.

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Post Posted: Sat Oct 23, 2010 6:51 pm 
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Just googled the question and every post says the same thing....

Non interference

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Post Posted: Sat Oct 23, 2010 9:29 pm 
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The only G engine which is an interference engine is the G13B.

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Post Posted: Sat Oct 23, 2010 11:40 pm 
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ben - g13b or g13bb? or both?

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Post Posted: Sun Oct 24, 2010 12:51 am 
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g13b is interferance i think the rest arnt.

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Post Posted: Sun Oct 24, 2010 2:49 am 
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g16b is interference hate to say people ....

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Post Posted: Sun Oct 24, 2010 3:44 am 
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alien wrote:
ben - g13b or g13bb? or both?


G13B...

Cos of the twin cam.

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Post Posted: Sun Oct 24, 2010 3:56 am 
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Ben_Sierra wrote:
alien wrote:
ben - g13b or g13bb? or both?


G13B...

Cos of the twin cam.


why Because of the twin cam?

Not disputing it just asking why.

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Post Posted: Sun Oct 24, 2010 5:27 am 
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I dunno if its just bacause its a twin cam, but the twin cam head is an interference design...

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Post Posted: Sun Oct 24, 2010 5:49 am 
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can anyone explain why Suzuki made the g13b twin cam head interference design. i find it odd that the rest of the series is free running but they decided to do it this way with the 13b. i dont see that the fact it is twin cam should dictate this design change or am i missing something?

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Post Posted: Sun Oct 24, 2010 5:53 am 
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more valves, higher compression, valves get closer to teh piston tops

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Post Posted: Sun Oct 24, 2010 5:54 am 
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this explains it well:
Image
No Valve/Piston Interference

Image
Valve/Piston Interference

and this seems pretty good at telling you if its interference or not: http://www.gates.com/part_locator/index ... on_id=3598

g13a - non-interference
g16a - non-interference
g16b - INTERFERENCE

theres no real data on the jimny, but if that trend flows through would mean if its a 16 valve engine, its interference - which would makes sense given the limited space in there =)

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Post Posted: Sun Oct 24, 2010 5:57 am 
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oh k higher compression engine that would explain it, cool thanks for the explanation.

yeah i know what is meant by interference and non interference. dont know anything about the g13b so i didnt realize it was higher compression.


Last edited by matty87 on Sun Oct 24, 2010 6:00 am, edited 2 times in total.
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Post Posted: Sun Oct 24, 2010 5:58 am 
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losfer wrote:
g16b is interference hate to say people ....


what makes you say that? as everyone else is saying its not...even google!

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Post Posted: Sun Oct 24, 2010 6:04 am 
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gates says it is, most multi valve engines are

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Post Posted: Sun Oct 24, 2010 6:08 am 
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ive worked on more suzuki engines than most people have had hot dinners , g13b is interference , g16b is interference ..

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Post Posted: Sun Oct 24, 2010 6:09 am 
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My G16B is not interference... I've wound it over by hand without cam belt fitted a few times..

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Post Posted: Sun Oct 24, 2010 6:13 am 
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want33s wrote:
My G16B is not interference... I've wound it over by hand without cam belt fitted a few times..


are you certain at least 1 inlet valve is fully open? and now not bent :)

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