All Things 288XP

[XP_Slinger]

Yes it will bolt directly on, same carb

Thanks Dustin. I thought I remembered that but wanted to verify. I have the beginnings of my next 288 build on the way and will be using a 281 carb from another member.
So; the difference between the 281 and 288 is just the bore size? Nothing else?

 

[XP_Slinger]

Anyone wanting to build a 281 I have a real nice KS jug I found.

If you still have it I would be interested Mike. Might have to wait until after Christmas though

 

[mdavlee]

If you still have it I would be interested Mike. Might have to wait until after Christmas though

It's there on the table.

 

[dustinwilt68]

Just the bore, nothing else. Some like the 281 better and it is a good 5 cube saw as well.

 

[XP_Slinger]

Just the bore, nothing else. Some like the 281 better and it is a good 5 cube saw as well.

The 281’s fan club has gotten me curious. I’m going to put one together. Just gotta round up a few other parts.

 

[rattler]

181/281 are compression monsters

 

[Daserlon]

@rattler what do you think is better for a 181se? The single thick ring or dual thin rings?

 

[rattler]

@rattler what do you think is better for a 181se? The single thick ring or dual thin rings?

I like the 2 thin rings

 

[XP_Slinger]

181/281 are compression monsters

What makes these two monsters compared to the 288 compression potential. They just respond better to tighter squish?

 

[Warped5]

What makes these two monsters compared to the 288 compression potential. They just respond better to tighter squish?

IIRC, the 281 has a smaller combustion chamber

 

[XP_Slinger]

IIRC, the 281 has a smaller combustion chamber

You’re right! I remember reading that now. Thanks for the kick

 

[rattler]

Ted is spot on. The chamber on a 281 is smaller than a 288 but have no decomp hard on recoil starter.

 

[dustinwilt68]

I recently saw a 281 overseas that had the boss for the decomp, just needed drilled and tapped, first time I ever saw 1 like that.

 

[Adamski]

I recently saw a 281 overseas that had the boss for the decomp, just needed drilled and tapped, first time I ever saw 1 like that.

was this the one I mentioned about bidding on? It went for £143 what a steal... I missed out on it as I was at an xmas do.. I bid 130 and never remembered to look.

 

[XP_Slinger]

It’s gotta be a little tricky to drill that hole without chipping the plating when you break through.

 

[Adamski]

It’s gotta be a little tricky to drill that hole without chipping the plating when you break through.

Shape a bit of steel to the radius of the cylinder wall and pack it tight against the plating with some little wooden wedges. Stops the drill firing through on break through. Works a treat on plated car parts..

 

[wyksta]

Ted is spot on. The chamber on a 281 is smaller than a 288 but have no decomp hard on recoil starter.

They are terrible that way. I have a ported one that is .031 squish and 200psi+. It is a pain to start, but it doesn't want to stop once it gets going.

 

[XP_Slinger]

They are terrible that way. I have a ported one that is .031 squish and 200psi+. It is a pain to start, but it doesn't want to stop once it gets going.

Wow that’s impressive for .031 squish. My 288 came in at 180psi with .032 and I was pretty happy with that

 

[XP_Slinger]

I recently saw a 281 overseas that had the boss for the decomp, just needed drilled and tapped, first time I ever saw 1 like that.

I have one, it’s a Mahle cylinder.

 

[wyksta]

They are terrible that way. I have a ported one that is .031 squish and 200psi+. It is a pain to start, but it doesn't want to stop once it gets going.