1974 CB360 Fallin' Ditch Hell Ride

irk miller

You've been mostly-dead all day.
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No big deal getting a copper gasket from Lani. Cheap enough to make sure it's right.
 

irk miller

You've been mostly-dead all day.
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In the meantime, stator cover is finished: etched and painted...




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irk miller

You've been mostly-dead all day.
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Haha. The U is for Utilitarian Art & Machine.

378 is for the displacement, for sure.

I lost my circles inside of the 8, so it's far from perfect. LOL
 

irk miller

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With the best I could figure measuring up, I ordered .042" base and head gaskets from Lani. The next size up is .050".
 

crazypj

Split personality, I fake being smart
Just noticed your question about 71mm piston. Can't be done without a load of work.
Almost sure you use CB450 or 500T pistons as three valve 400 pistons are too short and flat top so compression is around 6:1 You will need new liners as they can't be bored far enough. Get a used Suzuki GS1000 block as it uses 70mm pistons (It's been a long time since I did the measuring)
 

crazypj

Split personality, I fake being smart
You can contact Lani direct at
http://www.coppergaskets.us/. I think it saves a couple of bucks?
 

irk miller

You've been mostly-dead all day.
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crazypj said:
You can contact Lani direct at
http://www.coppergaskets.us/. I think it saves a couple of bucks?
This is true. It's actually what I did. I just noticed that listing this morning. I had no idea he was listing them on eBay now.
 

crazypj

Split personality, I fake being smart
I didn't know either. I guess it's a lot easier for people to find stuff they didn't know existed if they just put 'gasket' into ebay search?
 

Hurco550

Keep er' Between the ditches
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maybe there has been a recent influx of ppl doing these 378 mods again? IDK, it just seems like there are a lot of them on here at the moment, and maybe lani has been getting enough interest that he figured he would put them up on ebay?
 

ridesolo

You only bear responsibility for your own actions
When I ordered mine from Lani I first contacted him through eBay and then ended up ordering directly from him. He wanted to talk w/ me, insisted actually, and then after we had everything worked out and agreed to, he asked that I send him an email stating everything we had agreed to. No problem, I figure it's better to make sure everything was correct the first time. I recommend you stress the 69.5mm bore, though, because even after we discussed that and it was in the confirmation email I sent, Levi and I found the bore of the gasket I got had to be filed a little to insure a good fit w/ no piston interference. All of my dealings w/ him were easy and professional and he was friendly and polite. The gasket arrived very quickly.
 

crazypj

Split personality, I fake being smart
Lani hasn't changed, he really likes talking with customers.
I know for a fact he did a 'run' of CB360 to 378cc head gasketts about 6~7 yrs ago, I think it was 8 or 10 at one time? (I bought 2 as it's 'cheaper' and more accurate than cutting them from copper sheet (sheet was $17.00 then several hours cutting, drilling, filing)
May not sound like much but for a bike that's been out of production almost 40 yrs and was never very popular............................
Pretty sure he's done a lot more since then.
I forgot I sold some cylinder blocks bored for 69mm (with GS850 pistons) about 7+yrs ago, No idea where they are now though or even if they got built into complete bikes?
I never thought there would be more than 3~4 'in the wild' plus what I built for myself but pretty sure there are at least a few dozen by now? ;D
 

3DogNate

"You Meet the Nicest People on a Honda"
crazypj said:
I never thought there would be more than 3~4 'in the wild' plus what I built for myself but pretty sure there are at least a few dozen by now? ;D
One build here!


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irk miller

You've been mostly-dead all day.
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With .042" copper base gasket

Squish is .040"
Basically, the thickness of the head gasket .


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