[moralfibre]

A friend of mine owns a Maruti 800 '87 model. He would like to know if the existing cylinder head can be replaced with the head of the MPFi 800's (5 Speed ones)? Is it a direct fit or will it require some modifications to accomodate the MPFi engine head?

Secondly can the 5 Speed gearbox be fitted in lieu of the existing 4speed box?

[rider60]

okay i missed this thread, and i have an answer too. my cousin did this head swap when he had to do the engine overhauling and dint bother much about the GB, he was happy with the power there after.

and moralfiber, did your friend do this swap and what is the current status of your friend's car is it sold or something?

[gopz]

Interesting! I would watch this thread.

[humyum]

Both would be a direct fix.No problem at all.Have seen individual cases of both of them.

[krazydriver84]

Hey Can you please tell me how much the engine and gear swap might cost me?

I have a 2003 model.

[rider60]

Originally Posted by krazydriver84

Hey Can you please tell me how much the engine and gear swap might cost me?

I have a 2003 model.

approximately 25grand is what it cost my cousin! i dont have the complete list of what has been done on the car but then it was awesome to drive the car after that!

i think he got the whole head,bore and piston set along with the mpfi unit!

[alankarmotor]

HI HUMYUM, i think there is great confusion, carb. cyl head and mpfi 5speed cylinder heads can not be inter changed. The cyl block is allso different. Certainly not direct fix.

Originally Posted by humyum

Both would be a direct fix.No problem at all.Have seen individual cases of both of them.

[v1p3r]

MPFI 800 is also 2 valves, IIRC. I don't see what advantage you will get.

Try sourcing an Alto 1.1 engine with wiring and gearbox. That should be fun.

[rider60]

Originally Posted by v1p3r

MPFI 800 is also 2 valves, IIRC. I don't see what advantage you will get.

Try sourcing an Alto 1.1 engine with wiring and gearbox. That should be fun.

just that he had an engine rebuild done and with mpfi i think he got 45bhp instead if 40! nothing big!

[dinar]

Hey I had this question for a long time in my head, but no could answer... good info, Just curious, does this head swap apply to all the maruti suzuki engines, I mean bigger once too [zen, esteem,etc], are 4 valve heads direct swap with the two valved once.

[v1p3r]

Originally Posted by rider60

just that he had an engine rebuild done and with mpfi i think he got 45bhp instead if 40! nothing big!

You will need to swap more than just the head. Wiring harness, ECU, manifolds, sensors, all that jazz.

Originally Posted by dinar

Hey I had this question for a long time in my head, but no could answer... good info, Just curious, does this head swap apply to all the maruti suzuki engines, I mean bigger once too [zen, esteem,etc], are 4 valve heads direct swap with the two valved once.

Yes, in most cases. But compression differs.

[rider60]

Originally Posted by v1p3r

You will need to swap more than just the head. Wiring harness, ECU, manifolds, sensors, all that jazz.

well i did say there were other things too and i dint have the complete list. thats the reason the total cost of rebuild was 25k! or does it cost even more?

[v1p3r]

Rebuild? Pistons, rings, bearings, gaskets, labour etc should cost well over 25k, if that's what you mean by rebuild.

[rider60]

Originally Posted by v1p3r

Rebuild? Pistons, rings, bearings, gaskets, labour etc should cost well over 25k, if that's what you mean by rebuild.

and you mean the mpfi kit including the harnesser, costs extra apart from all that you mentioned?

[v1p3r]

Originally Posted by rider60

and you mean the mpfi kit including the harnesser, costs extra apart from all that you mentioned?

Yes it does. The parts that I mentioned are normally used in an engine rebuild/overhaul.