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I should know this........?????
Posted: Mon Feb 11, 2008 7:16 am
by moose
quik ??
(i really really should know this !!)
are 1.6 motors a FREE SPINNING engine !!!
spat a cam belt yesterday !!
2 mins from home , after driving to mornigton & back !!
Posted: Mon Feb 11, 2008 8:44 am
by Gwagensteve
yes.
all G series motors free spin unless they've been built up as a hyrbrid (16V head/8V pistons)
Steve.
Posted: Mon Feb 11, 2008 9:13 am
by want33s
'freespin' ?? ..... is that the same as 'non-interference'?
IE: Valves don't have enough lift to hit pistons at any time even with a broken cam belt/chain.
Posted: Mon Feb 11, 2008 9:49 am
by ScrawnC
want33s wrote:'freespin' ?? ..... is that the same as 'non-interference'?
IE: Valves don't have enough lift to hit pistons at any time even with a broken cam belt/chain.
Yep, dead right
Posted: Mon Feb 11, 2008 2:33 pm
by GRPABT1
Are you sure steve? I was told my G13B was an interference motor by a mechanic (he probabaly wanted the money for the timing belt change lol)
Posted: Mon Feb 11, 2008 5:54 pm
by PJ.zook
They definately are non-intefearance
Posted: Tue Feb 12, 2008 4:51 pm
by crackatinny
ahh no, G13B is interferance fit. this has been tested many times.
where did you get this info from??
Posted: Tue Feb 12, 2008 6:01 pm
by Gwagensteve
G16's aren't and A's aren't are you talking about the carby G13B or GTi?
Steve.
Posted: Tue Feb 12, 2008 7:07 pm
by suzimad
he has the gti engine , so yes interference.
Posted: Tue Feb 12, 2008 7:10 pm
by Gwagensteve
I know GRPABT1 is GTi, but that wasn't clear in Crackatinny's post.
OK I now know the GTI is interference but the WT sierra motor is a G13B too.
there's lots of WT sierra owners that got all worried that their G13B's were going to smash their valves.
Steve
Posted: Tue Feb 12, 2008 7:54 pm
by Lil'Loki
Would that be the GTI's head design and possibly a larger cam shaft causing interference?
If so, would a WT Sierra's G13B's 'no interference' be compromised by using a larger performance cam?
A curly one for Gwagensteve!!
Posted: Tue Feb 12, 2008 7:59 pm
by GRPABT1
Then they should know the difference between a G13B and a G13BA
Posted: Tue Feb 12, 2008 8:25 pm
by PJ.zook
Im talkin bout my G13A
Posted: Wed Feb 13, 2008 5:54 am
by 11_evl
Gwagensteve wrote:yes.
all G series motors free spin unless they've been built up as a hyrbrid (16V head/8V pistons)
Steve.
so i can use a 16v head with my 8v block and pistons?? and only worry if a timing belt breaks??
Posted: Wed Feb 13, 2008 6:30 am
by Gwagensteve
apparently there are some coolant holes than need to be drilled etc but yes they can be swapped, apparently (I havent't done it)
Steve.
Posted: Wed Feb 13, 2008 10:41 am
by zooker
11_evl wrote:so i can use a 16v head with my 8v block and pistons?? and only worry if a timing belt breaks??
I am in the process of doing this so I will do a write up once I am done. From what i was told by a shop that has done this before the 8v and 16v blocks are identical, the only difference being the pistons (4 cut outs per piston in the 16v). Im doing the conversion this weekend so guess i'll find out if there are any other differences such as coolant holes.
My block needed a bore and hone so I figured while I was at it I might as well replace the pistons with 16v pistons for ease of mind, knowing that the clearance is there.
Posted: Wed Feb 13, 2008 6:55 pm
by 11_evl
im running a 16v block with 8v pistons and a 8v head. no problems with cooling at all
its just been rebuilt.. im just about to buy a complete 16v baleno motor and was tossing up weather to sell my complete running 1600 8v or
just put the 16v head on my rebuilt motor with 8v pistons
Posted: Wed Feb 13, 2008 7:02 pm
by NIK
From what Ive read 16v has a better balanced crank (4 counter weights vs 8?) too so happier at higher revs.
Nik