Ok boys let's hear that tinkerman knowledge!!

[RoyalShootinstar13]

1998 RS1300 .....,

60 mph loud pop and dead engine no restart starter does not engage.

Diagnosis siezed engine.

I have 96 RS1300 so do I swap engine or just find exactly what parts are busted and swap them?I've been running her hard because I want to make a beast out this beauty. Ideas please .....vmax conversion is it  worth it.What about making the big frame hold fuel?

[RDawson]

Usually only two ways to kill these things:

1-carbs leaking gas into the cylinders/crankcase. 
2-no oil. 
Buy an engine cheaper than rebuilding one, if it was a carb issue take care of those or you’ll blow another one. 

[RoyalShootinstar13]

Yes the cylinder did fill with gas..  what broke then...sounded like left side 3 or 4 cylinder can't exactly remember the carb sequence.

[RDawson]

2 hours ago, RoyalShootinstar13 said:

Yes the cylinder did fill with gas..  what broke then...sounded like left side 3 or 4 cylinder can't exactly remember the carb sequence.

Probably a connecting rod. 

[RDawson]

Replacement engines are available. Don’t install those carbs on it without rebuilding them, Eykamp offers a rebuild service if needed. Seen old carbs put on a new engine just to blow it too. Float valve leaked fuel and hydro locked it. 

[luvmy40]

If you were running at 60 mph when this happened, it could not be a hydrolock issue. That happens when starting the engine.

 

You are certain the engine is siezed? Any chance it's just a blown main fuse? When they go they can make a very loud "POP", and would take out everything electrical. Also a seized engine at 60 MPH would lock up your rear wheel instantly, unless your clutches are in very bad condition.

Edited September 21, 2022 by luvmy40

[RDawson]

3 hours ago, luvmy40 said:

If you were running at 60 mph when this happened, it could not be a hydrolock issue. That happens when starting the engine.

 

You are certain the engine is siezed? Any chance it's just a blown main fuse? When they go they can make a very loud "POP", and would take out everything electrical. Also a seized engine at 60 MPH would lock up your rear wheel instantly, unless your clutches are in very bad condition.

If it’s locked my guess is it damaged a rod at startup that let go at speed. I’ve seen that happen before. Eykamp has some pretty knarly pics of engines that let go at speed. 

[luvmy40]

6 hours ago, RDawson said:

If it’s locked my guess is it damaged a rod at startup that let go at speed. I’ve seen that happen before. Eykamp has some pretty knarly pics of engines that let go at speed. 

I hadn't considered that it might not completely fail instantly in a hydrolock case.

 

I hade an exhaust valve disintegrate in a shovel head(bored and stroked) at 80 mph and spray shrapnel on the car in the right lane beside me. That had similar symptoms. Loud bang, complete loss of power instantly. 

[BlueSky]

Pinwall Cycle may have an engine.

[bpate4home]

@Marcarl What ever happened to Bongo Bob's engine? Did it get sold?

[RoyalShootinstar13]

Okay new engines on there.... It had set for about 2 years the new engine. When I  turn it by hand it goes so far then turn it backwards it goes so far and sticks what's causing that.What possibilities. guys I need you all it's my first engine I've done.by myself. just what I've read on here and other places and what feedback I get from you.And where do I unbolt the top half at.

[luvmy40]

The new engine crank doesn't rotate?

[Marcarl]

Do you have all the spark plugs out?

[RoyalShootinstar13]

On 9/29/2022 at 1:44 AM, RoyalShootinstar13 said:

Okay new engines on there.... It had set for about 2 years the new engine. When I  turn it by hand it goes so far then turn it backwards it goes so far and sticks what's causing that.What possibilities. guys I need you all it's my first engine I've done.by myself. just what I've read on here and other places and what feedback I get from you.And where do I unbolt the top half at.

So the reason for the lock up was two tiny bolts.....I wander if that's the reason they sold it so cheap 

[RoyalShootinstar13]

20 hours ago, Marcarl said:

Do you have all the spark plugs out?

Yes I did

[luvmy40]

1 hour ago, RoyalShootinstar13 said:

So the reason for the lock up was two tiny bolts.....I wander if that's the reason they sold it so cheap 

So, which bolts and how did they lock the crank?

[RoyalShootinstar13]

Wouldn't allow the piston to go all the thru it's motions