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Old 27th February 2006, 23:22   #1
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Default M800 Type 1 Mods

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?
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Old 25th February 2008, 23:16   #2
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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?
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Old 25th February 2008, 23:50   #3
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Interesting! I would watch this thread.
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Old 26th February 2008, 10:28   #4
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Both would be a direct fix.No problem at all.Have seen individual cases of both of them.
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Old 26th February 2008, 11:46   #5
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Hey Can you please tell me how much the engine and gear swap might cost me?

I have a 2003 model.
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Old 26th February 2008, 20:34   #6
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Quote:
Originally Posted by krazydriver84 View Post
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!

Last edited by rider60 : 26th February 2008 at 20:36.
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Old 26th February 2008, 21:21   #7
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Default Cylider Head Swap

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.
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Both would be a direct fix.No problem at all.Have seen individual cases of both of them.
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Old 26th February 2008, 22:04   #8
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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.
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Old 26th February 2008, 22:22   #9
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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!
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Old 27th February 2008, 11:13   #10
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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.
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Old 28th February 2008, 02:02   #11
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Quote:
Originally Posted by rider60 View Post
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.

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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.
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Old 28th February 2008, 03:01   #12
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Originally Posted by v1p3r View Post
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?
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Old 28th February 2008, 04:39   #13
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Rebuild? Pistons, rings, bearings, gaskets, labour etc should cost well over 25k, if that's what you mean by rebuild.
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Old 28th February 2008, 07:12   #14
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Quote:
Originally Posted by v1p3r View Post
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?

Last edited by rider60 : 28th February 2008 at 07:16.
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Old 28th February 2008, 14:08   #15
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Quote:
Originally Posted by rider60 View Post
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.
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