Hey my motorcycle has an Opel engine

[klwinter]

Hello everyone. I am new to this group.

I am restoring an old motorcycle from the 1950's or 1960's.
It origins are unknown since the bike was bought for an estate sale in Utah many years ago.

The seller was told that the bike was built as a salt flat racer in the 1950's.

I am doing research to see if that might be true.
The bike is very unique in its designs.

At the heart of the best is what appears to be a 1.1 liter Opel motor.
The Block number is
11SR-0021929
78

Head number
8-5-67-10
2-88-12

Can anyone tell me more about this engine? Year, performance.

So far I know
11 means 1.1 liter
SR means 9.5:1 or 10.0: Compression ratio and Increased Output.

It runs two single barrel Solex carbs.
It has the single point distributor.

Can any one help with more details.

fyi if anyone is interested. The engine is mated to an BMW R series motorcycle transmission and shaft drive. You should see the custom built center hub steering.

Kenneth Winter
East TN
423-526-1328


Photo added to member section under klwinter

or direct link

http://www.opelgt.com/photopost/member.php/uid/26752

[guyopel]

Post Photos and we'll see what help we can be . Thanks!

[tekenaar]

Hello everyone. I am new to this group.

I am restoring an old motorcycle from the 1950's or 1960's.
It origins are unknown since the bike was bought for an estate sale in Utah many years ago.

The seller was told that the bike was built as a salt flat racer in the 1950's.

I am doing research to see if that might be true.
The bike is very unique in its designs.

At the heart of the best is what appears to be a 1.1 liter Opel motor.
The Block number is
11SR-0021929
78

Head number
8-5-67-10
2-88-12

Can anyone tell me more about this engine? Year, performance.

So far I know
11 means 1.1 liter
SR means 9.5:1 or 10.0: Compression ratio and Increased Output.

It runs two single barrel Solex carbs.
It has the single point distributor.

Can any one help with more details.

fyi if anyone is interested. The engine is mated to an BMW R series motorcycle transmission and shaft drive. You should see the custom built center hub steering.

Kenneth Winter
East TN
423-526-1328

. . . in this HTML will tell you everything you want to know . . . definitely post lots of photos of both the bike and detailed engine shots!

[klwinter]

Well then that makes it a 1967.5 to a 1970.

How do I narrow it down?

I hope there are still parts around for this motor?

[tekenaar]

Well then that makes it a 1967.5 to a 1970.

How do I narrow it down?

I hope there are still parts around for this motor?

Your block S/N, 11SR-0021929, makes it an early one, so I'd say either '67½ or '69 (no 11SR engines in '68). Post a picture of the carbs and manifold as that will help determine the vintage, '67½ 11SR engines had no OECS, easily seen on the intake manifold . . . like I said, post engine pics!

[david the opel king]

I saw the pics on this motercycle and I got to say very cool if it was me I would leave the body on it and fab up a side car but it is you toy so do what you think will make it more cool

[GTJIM]

You have arrived at the right place to find out a bit about the Opel 1.1SR OHV motor.
Several of us have Kadett Rallye's equiped with that motor and there are also three or four early GT's with it as well.

Here is a link to a Wiki article about it:

[ame=http://en.wikipedia.org/wiki/Opel_OHV_engine]Opel OHV engine - Wikipedia, the free encyclopedia[/ame]

Variants of it have been used for many years - right up till 1993!

I have managed to find almost everything needed to rebuild the one from my 1967 Kadett Rallye as most everything from the 1.2 litre variant, except the pistons, interchange with the 1.1 litre unit. The 1.2l pistons are just too much bigger in diameter to be fitted - not enough cylinder wall left!

King Bearings over there still list con rod and main bearings - though cam bearings are more difficult. I found that English Vauxhall Viva 1159cc motor ones do fit.
Bearings Here: http://www.king-bearings.com/cat/panel/pan190.htm

PS: We love all Opel bits - This motor has turned up in all sorts of things from log splitters ... to motorcycles!
HTH

[klwinter]

I created a new member album under the name of

klwinter

or direct link to

Member Profile - Opel Photo Gallery

[GTJIM]

There is some engineering in that wee sweetie! Thanks for letting us see pictures.

Does it have any racing history with it - did it ever run at Bonneville?

[tekenaar]

I created a new member album under the name of

klwinter

or direct link to

Member Profile - Opel Photo Gallery

. . . definitely a '67½ . . . no 'OECS type' intake manifold in sight!

[newman27]

Wow - that is cool looking! With an Opel Engine, BMW bike, and Mercedes hood emblem you have most of the major German manufacturers represented! You need to add a VW and Porsche part on there somewhere...

[klwinter]

What is a OECS?

[klwinter]

The mechanical work to build this bike is really great.
I don't have a photo of it yet, but you should see the suspension.

It uses 4, 3/4" steel torsion rods with two dampeners.

It has sliding adjustable arms to fine tune the suspension travel.

[GTJIM]

What is a OECS?

Opel Emmission Control System

On later dual carb editions of this motor the idle function was partially transfered to a solenoid controlled unit mounted on the intake manifold between the carbs. and controlled by a very rudimentary 'computer'

It has made strong men go weak at the knees - and lesser men break into tears!

Be VERY thankful if yours is not fitted with that device!

[Dennis Texas]

The mechanical work to build this bike is really great.
I don't have a photo of it yet, but you should see the suspension.

It uses 4, 3/4" steel torsion rods with two dampeners.

It has sliding adjustable arms to fine tune the suspension travel.

I would love to see your bike I've sold off most of my collection except for an 49 indian and 58 triumph I just love old technology
Saw the link very nice bike
that is a sweet bike very impressive

[Phoenix]

That looks like quite a ride.

[tekenaar]

Opel Emmission Control System

On later dual carb editions of this motor the idle function was partially transfered to a solenoid controlled unit mounted on the intake manifold between the carbs. and controlled by a very rudimentary 'computer'

It has made strong men go weak at the knees - and lesser men break into tears!

Be VERY thankful that yours is not fitted with that device!

AMEN! . . . '67½ 11SR engines are a whole lot simpler to tune than any of the later OECS 11SR engines!!!