Swift GTi engine advice

[ScottieJ]

I don't see why the m15 would be any heavier than a G series engine, they are both 4 cylinder aluminium engines of pretty much the same size

[Anton]

I've seen it mentioned that they're heavier on clubswift. Although I've searched and not found any actual numbers - I do know the M13 powered Jimnies have an official kerb weight that is heavier than the G13 powered ones, but then the M13 jimnies also have anti-lock brakes and a few other additions, so there's no way to know if/how much of that is extra engine weight...

Ladaman weighed his and it did seem that the bits he weighed are heavier than the numbers I'd seen for a G13, but I can't remember exactly what the numbers even were now...

[Ladaman]

If it was an easier swap, and I wasn't so worried about the weight making my SJ a bit less drivable offroad (probably worried about nothing there, the M13a jimnies are ok, right?), I'd have bought an M15 ages ago!

I'm probably going to end up doing an M15 swap. I just want to look at all the available options first - imported G15a, bored/stroked G13bb, or M15a - comes down to which one is going to be the easiest and cheapest...

I don't thinks it's a difficult swap, it's just me making hard work of it

Knowing what I do so far with the change I'm doing, I'd recommend getting some Jimny bits first. I think engine mounts would be a good starter, exhaust manifold, sump pan and oil pick up, clutch friction plate and gearbox.

Next time I'm at a suitable position I will weigh the old Sammi engine. It it still complete so it should be quite a bit heavier than the weight I got for the M15A engine. I agree with Scottie though, they look similar, so the basic engine should be similar. There is probably a big saving on the M15A manifolds as the inlet is plastic, and the Jimny exhaust one is a folded steel fabricated thing, so no big castings. Then again, this will only make a few Kg difference at the most.

Nothing compared to the huge weight in mud you can pick up in these things.

Sorry for going off topic a bit.

[Miniswift]

Hi,

I have started to speak with a few people in know about G13B engines.
I have 2 engine projects. 1 is new liner and the other with a block guard.

This time, I have photos of block guard machining.
I have been told that, generic block guard is no good so I have designed 1 myself in a CAD and used same data to get my spare block machined to suit.
Here is my photo of the block.


Then, this is the photo of block guard itself. This is only 2 thou of 1" bigger than the actual gap it will fit into it.



I may have to drill more for water ways but I need to buy a Suzuki OEM head gasket which is multi layer steel ones....
So, it will be fitted after warming up the block and tapped in. Then face of the block will be machined to increase CR as using Vitara pistons only give 7.2:1 or something as low as that.
The block will be skimmed by 1mm as that is how much Gti and Vitara pistons are different by.
All this work will let me have over 300 ponies!
What do you think guys?

Cheers
Atchi

[donkeychomp]

300 horse from a 1.3 lump is mighty impressive. Nice one!

[Miniswift]

Hi,

I have a friend in Bristol with 370Bhp out of 74mm bore G13B.
He will be running in AWD Justy and as it is he is using Justy gearbox in FWD.

Anyway, this photo is a block guard fitted and skimmed, ready for re-bore to 75mm.



Once bored, it will get 5 thou will be skimmed.

Cheers
Atchi

[Anton]

I'm loving this, just wish I had the knowhow to do stuff like this!!!

[Miniswift]

Hi,

I had a spare 30 min today so I assembled piston and Gti con-rod to check my meassurement is correct.
I need to check TDC to make sure when I check, it is highest point piston will be.


Then, I need to check with a deck gauge to see if bolck and piston is same height or pistons to be lower than the block.


It seems.... piston and deck is same height. So it might work OK!

Cheers
Atchi

[turbo-tom]

looks good... you have way to much time and patience!

[Miniswift]

Time.... I don't have. I need extra day in the week to finish off my car projects.
Last time I have counted, I have 4!

Still, I will be busy once my girls are older.

Cheers
Atchi