OMC V4 motor weights

[NNT]

I see the 90 and 115's weigh around 315 lbs but the 120-140's weigh 375 lbs.Whats the difference in these motors?i thought they were basically the same except for the degrees of angle(60 vs 90) and bore and stroke sizes.Is there an actual weight difference between them or?

[Riverman]

Crossflows weigh 310, loopers weigh more....

[NNT]

so there really is 60lbs difference between the two?:confused: Is it me or is it really tough to find a decent motor in the 300 lb range,that makes around 115 hp.inline mercs and 115 omc v4's seem to be the only two options

[Riverman]

There are no modern or even semi-modern engines in this range. Sucks, eh?

[NNT]

bigtime,especially since the boat is only rated for a 70 and i'm pushing it trying to find at least a strong 90 or so.i don't know of any new 70's even worth thinking about

[Riverman]

Yamaha makes a 90 triple that is bulletproof and real light.

[NNT]

Yamaha makes a 90 triple that is bulletproof and real light.

yea but i heard it's kinda doggy and more like a 80 hp.I think there is some after market support for it though,so maybe the oomph can be put in it?

[Riverman]

It's also 261 lbs.and it is a carb motor. I'm sure someone on here knows how to make them go.

[1BadAction]

Xflow with a short shaft :eek:

[Riverman]

Xflow with a short shaft :eek:You mean a V4? That would be a hard to find item. As are used V4 parts as I'm now finding.:(

[EMDSAPMGR]

Early v-4 crossflows weighed in between 300 and 310. These were still made until 1996 as 88 to 115 hp. Generally, parts are still readily available for these engines. The 60-degree loopers were made starting in the 1997 range, weigh in at 349 and produced 90 and 115 hp. They did make a 120 and 140 hp 90-degree looper in the late 80's through mid nineties that weighed in at the 375 figure. The 120/140 were larger displacement and much beefier than the original crossflows.

[1BadAction]

You mean a V4? That would be a hard to find item. As are used V4 parts as I'm now finding.:(

yea, thats what wayne taylor is fo :D :cool:

[delawarerick]

Find a late 80s 110 xflow v-4 you will be happy with that. It is basically the 140 of the 70s. I have one modified and has run real strong for 6 years. I have beat the snot out of it and it still runs. Pushes my sidewinder to 62 gps. Rick

[chynewalkr]

i found a used 83 115 xflow for 900 bucks on a ranger bass boat, did the usual tricks to it, and it pushes my boat to 69mph gps. not bad:D

Ive been having dreams of a v4 looper with a wayne tayler mid....drooool. that or wingnuts vixen motor.

[DarthVMAX]

Weigh in at 365 pounds (as per OMC specs), they are heavy for a 4 cyl but they have gobs of power and torque. I had one on my Stratos and turned a 25" Renegade 4 blade @ 5900 rpm. From what I have read and seen they can be modded to the hilt. Just like 1badaction stated, check out MAD EFI (Wayne Taylor).
I think 1984 was the last year for the 140 OMC X-Flow, starting in 1985 they re-badged it the 110 (due to rating horsepower at the propshaft), then later the 112 and 115. They are a very good/durable motor and I would think parts are everywhere for these (you see them everywhere here in Kansas).
Another consideration is to find a Yamaha 115 or 130 V-4. They still make the 115 and quite producing the 130 a couple of years ago. They are heavier than the OMC X-flow's yet lighter than the OMC 90 degree loopers. In the early 90's they made a 115 Pro V that was supposed to be a little hotter (125-130 hp) than a regular 115. Hydro-Tec makes HP stuff for the 3 cyl 90 hp Yamaha, and all the V-4's and V-6's.

[Freddie Webb]

You can get the v-4 122cid looper down to 295lbs. It isn't easy but can be done. You can get much more than 140hp at the propshaft. V4 crossflow parts are also readily available you just have to look. They make good horsepower also.

[berg969]

get a 90 yamaha witha 15" and a small lower its under 220#
http://img111.imageshack.us/img111/2060/2c794kx.jpg
http://img111.imageshack.us/img111/6870/c91e7ih.jpg
http://img51.imageshack.us/img51/3622/e9c65nv.jpg

[NNT]

You can get the v-4 122cid looper down to 295lbs. It isn't easy but can be done. You can get much more than 140hp at the propshaft. V4 crossflow parts are also readily available you just have to look. They make good horsepower also.

how do you get them down to 295?any examples or tips?

[Laker]

Ya fred what did you do to get a looper down to 295?

[Action Frank]

Early v-4 crossflows weighed in between 300 and 310. These were still made until 1996 as 88 to 115 hp. Generally, parts are still readily available for these engines. The 60-degree loopers were made starting in the 1997 range, weigh in at 349 and produced 90 and 115 hp. They did make a 120 and 140 hp 90-degree looper in the late 80's through mid nineties that weighed in at the 375 figure. The 120/140 were larger displacement and much beefier than the original crossflows.

What does an 89 225 looper weigh??

[David]

450 lb
Seemed heavy then

[graemers]

What difference is there between the weights of V4 omc's and V6 Merc's? I have a looper V4, and if it's weighing in at 375........:eek: ! room for improvement there I think

[David]

1990 200 Merc 382 lb
1998 225 Pro Max 350 lb
1990 140 looper Johnny 364 lb

[graemers]

Does anyboady know any quick easy gains for HP? What are the hard ones besides porting?

[David]

Quick easy gains for HP? Unless you do your own engine building, its cheaper to sell your old motor and buy more power.

Optimizing the set up with what you have can be even cheaper.