200x head on a 200s PICS

**litebulblsc** · 08-24-2009, 10:22 AM

I have been thinking of putting a 200x head and valvetrain on my 1985 200s. It should make a little more power. Plus it would take care of a few problems my trike has. How difficult would this be and is it just an easy swap? Does the 200x head have a smaller combustion chamber resulting in higher compression? How hard are these timing chains to do, I have did them on cars before but never on a cycle. What year 200x head would work? Would it matter if it a one or two peice?

Answers to any of these questions would help.

Thanks in advance,
Josh

**Yamaha_Rules69** · 08-24-2009, 12:31 PM

The 200x head from the years of 83-85. It is a very easy swap to do, and the timing is easy enough to figure out. It should make a little more power, especially if you use the X carb and cam. Do you plan on using the 200x cam also? All the parts are a direct swap. Make sure you use a new head gasket, and dont use too much sealer on the rocker arm cover. Review a service manual if needed. Good luck!

**litebulblsc** · 08-24-2009, 12:35 PM

Ya I plan to use the cam and carb if I can find one cheap enough. Right now it looks like the head and cam I might be able to get fro 20 dollars.

**AutoXer** · 08-24-2009, 12:39 PM

the valve size is the same .... how does it make any more power? Head volume also looks the same (the x had a flat top piston to get a higher compression number)

**litebulblsc** · 08-24-2009, 12:51 PM

Different cam

**inv3ctiv3** · 08-24-2009, 12:56 PM

I have a used head and rocker head cover from my '85 200x for sale, probably needs a valve job but other then that it seems fine.

**litebulblsc** · 08-24-2009, 12:57 PM

How much shipped to 48145?

**inv3ctiv3** · 08-24-2009, 01:03 PM

Originally Posted by litebulblsc

How much shipped to 48145?

$45?

**litebulblsc** · 08-24-2009, 01:20 PM

I got a line on a cheaper one right now but if that doesn't work out I will keep you in mind. Do you have a cam you could throw in too?

**inv3ctiv3** · 08-24-2009, 01:28 PM

Originally Posted by litebulblsc

I got a line on a cheaper one right now but if that doesn't work out I will keep you in mind. Do you have a cam you could throw in too?

I don't but the $45 was obo, let me know I am open to offers.

**litebulblsc** · 08-24-2009, 01:37 PM

Sent pm to ya

**jenndnn3** · 08-24-2009, 02:17 PM

The changes are in the cam and pistons. Not in the heads.. Rockers changed for compatibility to the decompression.

**MonroeMike** · 08-24-2009, 03:11 PM

Originally Posted by litebulblsc

Different cam

Same part number for the 200s and the 200x?

CAMSHAFT 14101-965-000

**litebulblsc** · 08-24-2009, 03:20 PM

You know they have the same part number or are you trying to find out if they do?

**MonroeMike** · 08-24-2009, 03:34 PM

I looked them both up. Just wondering how they could be different, with the same part number.

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200x head on a 200s PICS