is this a mercury mod vp? or just a 200?

**Mrzip** · 11-04-2021, 12:58 AM

2.4. 200. They run good .

**tlwjkw** · 11-04-2021, 01:23 AM

Originally Posted by Mrzip

2.4. 200. They run good .

absolutely!...........

**joeymcgovs** · 11-04-2021, 06:00 AM

thank you for your knowledge and quick response

**joeymcgovs** · 11-04-2021, 06:04 AM

any idea what heads or carbs they may be from?

**tlwjkw** · 11-04-2021, 08:06 AM

heads would need tha cc's checked since they have some age on 'em.. have ya checked comp/leak down?.. carbs could be one of several.. should have a WH XX number stamped on tha top, back.. some slipped through without a number though.. probably 15's but could be a coupla different ones as tha slosh tubes and baffles (if there) could be added ta any of 'em.....

my guess is he had a high performance oval port or bridgeport and wasted tha rotating assy.. found a good production 200 rotator then put tha easy good stuff on it.............. hi perf. oval port and production 200 rotators are same in those years.. one is painted and one is not................

**joeymcgovs** · 11-04-2021, 11:34 AM

i tried to do a compression test but the starter is shot... not a good way to start lol luckily my pops has a mariner 200 of the same year which i plan to grab the starter off today and do compression test

**Dave S** · 11-04-2021, 05:44 PM

Droids............

**joeymcgovs** · 11-05-2021, 11:09 AM

was able to borrow a starter off my dads mariner 200, compression is 125psi all cylinders , forgot to get the numbers on the carbs, i will look for those today

**joeymcgovs** · 11-23-2021, 05:19 AM

hello all, sorry for the delay i have been working like crazy, anyway, on the top of the carbs there is a number stamped, it is WH-22-1, any help would be greatly appreciated

**rgsauger** · 11-23-2021, 08:05 AM

Congratulations! That compression is absolutely perfect it is what it came with from the factory. Sounds like your motor is in good shape inside. Also, those 22 carburetors are very good ones. This motor should do a great job for you. What are you going to hang it on?

Down the road, you might want to have the heads shaved to raise the compression up about 20 points. Will make a difference in the mid range. Also, it is always a good idea to put in fiberglass reeds like those from Chris Carson. Will smooth out the bottom end and make it a little stronger in the mid. The most important thing, they do not damage the engine if one of them breaks and passes through the cylinders.

**joeymcgovs** · 11-23-2021, 11:41 AM

wow thank you for the fast response, and knowledge, well i got the engine because i was looking for a merc 150, however an old friend of mine had this and told me it was a mod vp... i felt bad because i knew it wasnt but took it off his hands anyway as he was starving for cash... my boat is a 16' Tahiti, which currently has an evinrude 140 looper on it... i know the 200 would be way over kill for a 16' hull but man would it be awesome. anyway, do you know what size jets should be in each carb? also, is there a way to determine what heads are on this block?

**tlwjkw** · 11-23-2021, 05:51 PM

WH carb chart (screamandfly.com)

**joeymcgovs** · 11-23-2021, 08:47 PM

awesome thank you, are the carbs i have the ones that normally come on this engine?

**rgsauger** · 11-23-2021, 10:40 PM

Yes. Those are pretty typical for carburetors for that motor. I am going to say that the heads are stock because your compression is about the factory ratio. When you start shaving the heads, the compression will go up to 135 or 145 or even above.