Hey Guys,
Did a bit of a search and couldn't find anything so here goes.
My engines about to crap itself in the ol' zook so i was talking to some guys about what to do next. the 1.6 conversion is possible, but its alot of work for a non technical guy.
Has anyone heard of anyone boring out the 1.3L engine to 1.5L and running with the 1.6 pistons? It'd be much easier to do as the engine just has to come out and go back in.
Thoughts anyone?
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1.5L sierra
the one on ebay was discribed as a vitara engine or could be used in sierra as a conversion, me thinking the bell housing was the same as g16. as far as boring goes, suzi sport in qld. they do a 1400 kit for the 1.3, (used to be a 1500). my brother used this in his worn out jimny and was very happy.
jason
jason
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for sale: wt diffs, snake hi steer, maruti 4.1 wt centres,
what did it achieve?mr green wrote:the one on ebay was discribed as a vitara engine or could be used in sierra as a conversion, me thinking the bell housing was the same as g16. as far as boring goes, suzi sport in qld. they do a 1400 kit for the 1.3, (used to be a 1500). my brother used this in his worn out jimny and was very happy.
jason
are they?? i wasnt aware that they were!!mr green wrote:what is the point in putting 1.6 pistons in a 1.3 when they are the same bore size?
mainly because i got std 1.3 and std 1.6 and the pistons dont interchange... or at least i THINK the 1.6 is std, either way they dont fit in my 1.3 and are still in good condition
michael
i couldn't see the kit on their webby anywhere?mr green wrote:the one on ebay was discribed as a vitara engine or could be used in sierra as a conversion, me thinking the bell housing was the same as g16. as far as boring goes, suzi sport in qld. they do a 1400 kit for the 1.3, (used to be a 1500). my brother used this in his worn out jimny and was very happy.
jason
I had my 97 coily done two years ago. It has a G16a bottom with everything else basically 1.3. Additional items required were modifications to the oil pickup to fit the 1.3 oil pan, adapter plate, modified engine mounts. Installed new G16a water pump, G16a timimg belt and cover, modified timing belt tensior to suit. Installed new clutch while we were there.
The head was ported and 1.6 exhaust valves fitted. A cam from Clive cams Melbourne was used also to provide more torque. The distributor was re weighted to suit the cam profile and the the standard carburettor re jetted to match.
The thing to keep in mind that it is not engineered as it would not meet emmissions with the 1.3 head on the 1.6 bottom. Engineering is OK if you use a complete G16a long motor. The 1.3 raises compression and you need to run 95 or better. I have had no issues in the last two years with it and it will run up the Mooni Mooni bridge both sides in 5th on 100km. You notice the additional torque on hills and under acceleration definetly. You don't notice the additional power as much as the gearing kills it and I don't tend to run to to the peak power figure which on the dyno was 68HP at 5,000 rpm. I tend to change at 4000.
There are tangible benefits but you do need to keep in mind the costs, registration and insurance issues.
The head was ported and 1.6 exhaust valves fitted. A cam from Clive cams Melbourne was used also to provide more torque. The distributor was re weighted to suit the cam profile and the the standard carburettor re jetted to match.
The thing to keep in mind that it is not engineered as it would not meet emmissions with the 1.3 head on the 1.6 bottom. Engineering is OK if you use a complete G16a long motor. The 1.3 raises compression and you need to run 95 or better. I have had no issues in the last two years with it and it will run up the Mooni Mooni bridge both sides in 5th on 100km. You notice the additional torque on hills and under acceleration definetly. You don't notice the additional power as much as the gearing kills it and I don't tend to run to to the peak power figure which on the dyno was 68HP at 5,000 rpm. I tend to change at 4000.
There are tangible benefits but you do need to keep in mind the costs, registration and insurance issues.
Why won't the 1.3 head pass emissions if you dont mind my asking?red97coil wrote:I had my 97 coily done two years ago. It has a G16a bottom with everything else basically 1.3. Additional items required were modifications to the oil pickup to fit the 1.3 oil pan, adapter plate, modified engine mounts. Installed new G16a water pump, G16a timimg belt and cover, modified timing belt tensior to suit. Installed new clutch while we were there.
The head was ported and 1.6 exhaust valves fitted. A cam from Clive cams Melbourne was used also to provide more torque. The distributor was re weighted to suit the cam profile and the the standard carburettor re jetted to match.
The thing to keep in mind that it is not engineered as it would not meet emmissions with the 1.3 head on the 1.6 bottom. Engineering is OK if you use a complete G16a long motor. The 1.3 raises compression and you need to run 95 or better. I have had no issues in the last two years with it and it will run up the Mooni Mooni bridge both sides in 5th on 100km. You notice the additional torque on hills and under acceleration definetly. You don't notice the additional power as much as the gearing kills it and I don't tend to run to to the peak power figure which on the dyno was 68HP at 5,000 rpm. I tend to change at 4000.
There are tangible benefits but you do need to keep in mind the costs, registration and insurance issues.
I was under the impression that if you used the 1.3 head with the g16a the compression was ok, whereas it would have been higher with teh g16b (cause thats the EFI block).
Which alternator and starter motor did you use? 1.3? Did you have to mod them?
I used a Suzisport adapter and engine mount plates. The adapter is fine and my mechanic had to modify the plates to get the engine to align to the fan shroud etc. He did space the right hand side block to mounting plate with approx 25mm spacers. A bit of mucking around but certainly achievable.
Height is OK and the only thing that rubbed on the bonnet insulation mat was the hot air duct from the exhaust manifold to air cleaner box.
We used the 1.3 starter motor and alternator.
The RTA are OK with 1.6. The issue is that the 1.3 head, 1.6 block combination are not ADR emmissions compliant. To get the engine passed I would at least when I did it have to under go an emmisions test at an approved testing centre. If it passed then ask an engineer to provide a report. Some engineers then told me they would not do a report even with a pass as the RTA had closed that door.
The guys who did my work did a lot of performance work and told me not to bother and just run it. So far nobody has even bothered to look at the engine number over the last two years.
It is an improvement and I would not go back to the 1.3 unless I absolutely had to. It looks standard and you wouldn't know it wasn't unless you were looking for it very hard.
Height is OK and the only thing that rubbed on the bonnet insulation mat was the hot air duct from the exhaust manifold to air cleaner box.
We used the 1.3 starter motor and alternator.
The RTA are OK with 1.6. The issue is that the 1.3 head, 1.6 block combination are not ADR emmissions compliant. To get the engine passed I would at least when I did it have to under go an emmisions test at an approved testing centre. If it passed then ask an engineer to provide a report. Some engineers then told me they would not do a report even with a pass as the RTA had closed that door.
The guys who did my work did a lot of performance work and told me not to bother and just run it. So far nobody has even bothered to look at the engine number over the last two years.
It is an improvement and I would not go back to the 1.3 unless I absolutely had to. It looks standard and you wouldn't know it wasn't unless you were looking for it very hard.
Last edited by red97coil on Fri Nov 23, 2007 8:27 am, edited 1 time in total.
Just quickly on compression. Compression is calcualted on a number of elements such as bore, stroke, deck height, gasket thickness and head volume. In my case stroke, bore, deck height certainly changed so that in combination with the smaller volume would affect the final outcome.
The starter motor fits with a little filing of the block. You can file the starter case but we went the block as it looked the better option. We are talking a very small amount here.
The starter motor fits with a little filing of the block. You can file the starter case but we went the block as it looked the better option. We are talking a very small amount here.
Last edited by red97coil on Fri Nov 23, 2007 8:25 am, edited 1 time in total.
Posts: 912
Joined: Tue Nov 09, 2004 6:29 pm
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Location: {Sydney, Australia or Rio, Brazil Ride: Sierra JXi}
Vitara pistons are 75mm
sierra are 74mm
i got two engines in bits trying to get the down low of whats what, hopefully doing the build next year /9got all the parts just need to do the machining)
i can safely say if you got a g13a and you go vitara 1mm oversize pistons you get 1397cc.
The thing is you need gti rods since the vitara pistons have a 19mm pin hole instead of a sierra 17mm pin.
The trusty calipers reveal that the 8v pistons are the same dimentions for a g13a or a vitara (other then pin and bore diameter) Even the dished area (well i measured the depth, lower and upper circle diameter.
If you use a vitara head or your sierra head you are still cramming an extra 99cc into the dome so its going to bump the compression up a notch or two. The only advantage in the vit head is that it has bigger exhaust valves and a slightly better cam
sierra are 74mm
i got two engines in bits trying to get the down low of whats what, hopefully doing the build next year /9got all the parts just need to do the machining)
i can safely say if you got a g13a and you go vitara 1mm oversize pistons you get 1397cc.
The thing is you need gti rods since the vitara pistons have a 19mm pin hole instead of a sierra 17mm pin.
The trusty calipers reveal that the 8v pistons are the same dimentions for a g13a or a vitara (other then pin and bore diameter) Even the dished area (well i measured the depth, lower and upper circle diameter.
If you use a vitara head or your sierra head you are still cramming an extra 99cc into the dome so its going to bump the compression up a notch or two. The only advantage in the vit head is that it has bigger exhaust valves and a slightly better cam
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