Outer Limits 4x4 Board

is the gti block the same as a 1.3 sierra block

no different crank different pistons different size...... on the outside they are very close. They have the same mounting holes and the sierra trans will bolt up.



Why do you ask such a blank question? what is it your really wanting to know?

will a gti head go on sierra block

it will bolt up and fit but as soon as you turn it over it will bend every valve in the head. No clearance and the wrong pistons for a 16valve head. They will work the other way around. A carby head will go on a 16v block but a 16v head will not work on a 8valve block.
If you know where to look you can pick up a complete GTI engine with all the trimmings for $600. But honestly if you going to put money into going EFI just put out and get a vitara or balino 1.6 if you don't you will be kicking your self later.

then u need a conversion kit on top of getting the motor and stuff

V.W.Dave wrote:it will bolt up and fit but as soon as you turn it over it will bend every valve in the head. No clearance and the wrong pistons for a 16valve head. They will work the other way around. A carby head will go on a 16v block but a 16v head will not work on a 8valve block.
If you know where to look you can pick up a complete GTI engine with all the trimmings for $600. But honestly if you going to put money into going EFI just put out and get a vitara or balino 1.6 if you don't you will be kicking your self later.

Rather have me a easily modifyable GTi motor than a 1.6 personally, I'm not kicking myself. Each to their own.

GRPABT1 wrote:

V.W.Dave wrote:it will bolt up and fit but as soon as you turn it over it will bend every valve in the head. No clearance and the wrong pistons for a 16valve head. They will work the other way around. A carby head will go on a 16v block but a 16v head will not work on a 8valve block.
If you know where to look you can pick up a complete GTI engine with all the trimmings for $600. But honestly if you going to put money into going EFI just put out and get a vitara or balino 1.6 if you don't you will be kicking your self later.

Rather have me a easily modifyable GTi motor than a 1.6 personally, I'm not kicking myself. Each to their own.

So think about it. You have had to modify your dinosaur twin cam motor just to get to what you could of had without modification by going with a 1.6 from the start? So you would take peaky revs over a more torque? I will not argue with you over the GTI being better then any of the carbys out there. If I had a free GTI engine sitting here then yes I would toss it in any sierra to get rid of the carby.
The only 2 advantages of puting a GTI in over a 1.6 is you don't need a mod plate in NSW (not sure about other states) and 2 they are cheap.
But as you said each to their own

shreks wrote:then u need a conversion kit on top of getting the motor and stuff

I have done the convert 4 times now only the first one I used a kit.

You can make the motor mount bracket in about 5 mins out of a a peace of 25/50 blue metal, you can weld on new studs onto the outter edge of your sierra box. it costs about $10 on a bad day.

shreks wrote:then u need a conversion kit on top of getting the motor and stuff

I have done the convert 4 times now only the first one I used a kit.

You can make the motor mount bracket in about 5 mins out of a a peace of 25/50 blue metal, you can weld on new studs onto the outter edge of your sierra box. it costs about $10 on a bad day.[/quote]

i thought u need something to mount a sierra box to the 1.6

yes you need an adaptor plate to mount the G16 to a sierra box, the adaptor kit (if you bought one) would cost $200 that also includes the engine mount also.

As for 1.3 twin cam vs 1.6 its more of a person choice as bot engines have roughly the same power output but the 1.3's power is higher up in the revs.

G13B 74 kW @ 6500rpm and 112Nm @ 5000rpm
G16B 69 kW @ 5200rpm and 138Nm @ 4000rpm

Mitchie wrote:yes you need an adaptor plate to mount the G16 to a sierra box, the adaptor kit (if you bought one) would cost $200 that also includes the engine mount also.

As for 1.3 twin cam vs 1.6 its more of a person choice as bot engines have roughly the same power output but the 1.3's power is higher up in the revs.

G13B 74 kW @ 6500rpm and 112Nm @ 5000rpm
G16B 69 kW @ 5200rpm and 138Nm @ 4000rpm

NO YOU DO NOT NEED A PLATE

People that don't know how to do it without a plate you will. Its simple to do it without a plate. all the plate does is moves the outer bell housing bolts out about 2cm on each side. If you get 2 studs and weld them to the side of the bell housing of the trans it works and it cost next to nothing. Its what my old set up was and its the set up that I just put into Zooktastics sierra 4 weeks ago.
What do you think they did back in the day before some one came up with the plate idea? And another small thing but this may just be the luck of the draw Every sierra that I have been around that uses the plate burns up clutches quicker then if you mount the box the way I just said. The adapter plate is a few mm thicker then the standard plate.

V.W.Dave wrote: And another small thing but this may just be the luck of the draw Every sierra that I have been around that uses the plate burns up clutches quicker then if you mount the box the way I just said. The adapter plate is a few mm thicker then the standard plate.

maybe you should learn how to adjust them then. clutch is cable operated and is easily adjusted to factory specks.

supazuk wrote:

V.W.Dave wrote: And another small thing but this may just be the luck of the draw Every sierra that I have been around that uses the plate burns up clutches quicker then if you mount the box the way I just said. The adapter plate is a few mm thicker then the standard plate.

maybe you should learn how to adjust them then. clutch is cable operated and is easily adjusted to factory specks.

I have never had a problem with clutchs in fact I put a new standard one in the week I got my zook and it was still in there when I sold the motor.

V.W.Dave wrote:
So think about it. You have had to modify your dinosaur twin cam motor just to get to what you could of had without modification by going with a 1.6 from the start? So you would take peaky revs over a more torque?

The level of modification in my GTi motor is an aftermarket coil (needed replacing and cost the same), some eagle leads, and a unifilter. It has more than enough power offroad and does the maximum QLD speed limit just fine.

The GTi motor has more torque than the stock sierra motor everywhere in the rev range, and like I said if you want more than power and torque than a 1.6 you don't have to spend much, or just buy a modded motor already for bugger all $$$.

I like the 1.6L motor, but I just prefer the GTi, and would do the conversion on another zook if I got the chance.

Interestingly one of my friends MK2 GTi swifts has about 375000km's on it and it's still going strong and has never been pulled down. This thing is cammed up and sees 8000rpm regularly and pulls like a 13 year old boy in such a light car. That is reliablity that I rate higher than power and torque in an offroad situation, and I've heard plenty of 1.6L head warping horror stories.

In the end of the day I have a 525hp VN commodore for when I want power, my point is the GTi has enough. It's hard enough owning 2 modified cars without having to worry about the motor in both.