650 XS Mercury Motor - For Sale

[RabidGatorFan]

Here are some pics of the 650x/700x. Yes, there are also pics of a 650xs in there too.

[RabidGatorFan]

And here is the infamous/almost unknown Merc 3-Cylinder Looper Mod 50 engine. Credits to Fast Fred on BRF/S&F for the pics. According to Fred, this resides (along with 5 others, 6 TOTAL) at Wienandt's shop. Notice the description fits exactly to B&H's previous post.

[RandY Aveline]

so what class did this 650 xs engine compete in ??

was it the sst 60 OPC class ?

[sam]

The 650XS was from an era before the SST classes.

Since it was a "production" motor meeting all the gearshift box stock qualifications it raced in the "E" classes ... EP and SE, later the race engine "Mod 50" class

[Guest]

Carbs

I am looking for four 650XS carbs to finish an engine I'm building. I'm tired of waiting for Tillitson to produce the carbs I wanted so I think I will try the 650XS carbs if they are available. E mail me at aerolinerboat@aol.com or post here.

Thanks,
Alan

[Merc1]

Where are you located?

[STEVE FRENCH]

Scott/Sheila,
Was good to meet ya at Zanesville!...Nice motorhome with Howie's tunnel in tow.......
(Also had two 3-holer 56ci (Wienandt built) OMC's for sale...in slide-out basement storage!)

100N
.
.

[Scott Whittington]

Scott/Sheila,
Was good to meet ya at Zanesville!...Nice motorhome with Howie's tunnel in tow.......
(Also had two 3-holer 56ci (Wienandt built) OMC's for sale...in slide-out basement storage!)

100N
.
.

Steve,

It was nice meeting you and Beth as well. How is the knee holding up?

Congratulations on your podium finish!!

Take care,

Scott & Sheila

[Scott Whittington]

Where are you located?

We are located in Penetanguishene, Ontario, Canada

[Roshambo]

650XS Reliability and Specifications

Been reading the past posts and have been getting very excited on what I'm reading.

So whats the reliability of these engines? Are they similar to the 44XS's reliability? I realized its a racing outboard, so I know its not built like a tank.

What is the typical horsepower output at WOT? Hoping its more than 65hp. And whats the maximum average WOT RPM - 7000?

Last but not least what is the dry weight of this outboard? I read on S&F off a picture post (that I can't find anymore) that it was 180-ish.

Just recently I bought a Mercury Chopper II prop, 13 splines, 10 1/4" Diameter and 18" Pitch, would this fit on the 650XS?

Thanks,

Roshambo

[StrikeZone]

You'll find it won't probably fit as the shaft on my 650XS/700X SpeedMaster gearcase is 12 spline. Also a 18" pitch will possibly overload the motor.

[sam]

You'll find it won't probably fit as the shaft on my 650XS/700X SpeedMaster gearcase is 12 spline. Also a 18" pitch will possibly overload the motor.

He asks if it will fit a gearshift XS, not a Speedmaster X

[Roshambo]

Red Band 650XS's?

So were there such a type of 650XS with a red band like in this video( http://www.youtube.com/user/donaldsp.../0/YTqWVvYuKDY ), with a shift-able "fishing"gear case as well?

[sam]

Certainly ... that is the difference between the XS and the X

XS was full shift, X was Speedmaster

XS was sold thru regular dealers at least 250 per year for 4 years and advertised in the regular catalog

The X was a race only motor not available from regular dealers, limited quantity

There were differences in the porting between the 2 motors. The XS was advertised as 90 hp, but that may have been generous ... more likely correct for the X motors which may have been up to 105-110 hp

[Roshambo]

Do any of you know what octane and type of fuel the XS's ran on?