Bad head?

M

maddmaxx

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Sep 4, 2018

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• Mar 28, 2020

• #1

So I bought a full blaster engine for 50 bucks complete with clutch and all parts attached to it, the piston had exploded and there are tiny pieces of metal everywhere so my question is I disassembled the entire thing except the bottom end, do I need to disassemble the bottom end as well to ensure all pieces are out of it or is there a different way? Also the cylinder itself looks beautiful but I believe the head is bad, here’s a picture, can this be fixed?

 

Awk08

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• Mar 29, 2020

• #2

You will indeed need to split the cases, I'd replace everything, main bearings and a crank rebuild, others have gambled and got away with flushing the bearings and got lucky, I did not, even 1 little piece missed can destroy everything, including any new top end parts.

That head looks like it's been at least milled before, but not evenly, and possibly the combustion chamber and squish band reworked.
I'd send that off (and the crank & cylinder) for a refresh to kenoconnorracing.com

do it right the first time and not cry twice.

 

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Slydog

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• Mar 29, 2020

• #3

Agreed with splitting cases.can get head rechambered cheap.did you buy this motor as a spare or replacement engine?

 

M

maddmaxx

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• Mar 29, 2020

• #4

I bought it for spare parts, I salvaged everything I could and threw the bottom end away, I don’t want to deal with it but just having a spare clutch pack was worth the 50 bucks alone

 

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M

maddmaxx

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• Mar 29, 2020

• #5

Having a good spare OEM cylinder is nice as well

 

Slydog

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• Mar 29, 2020

• #6

maddmaxx said:

I bought it for spare parts, I salvaged everything I could and threw the bottom end away, I don’t want to deal with it but just having a spare clutch pack was worth the 50 bucks alone

Click to expand...

Don't throw bottom end out! The cases are still good right. If you break a chain you might need it

 

Slydog

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• Mar 29, 2020

• #7

Slydog said:

Don't throw bottom end out! The cases are still good right. If you break a chain you might need it

Click to expand...

You can easily get your money back selling cases. Where's your garbage can at?

 

M

maddmaxx

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• Mar 30, 2020

• #8

Really? OK, I’ll take it out of the recycling

 

Slydog

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• Mar 30, 2020

• #9

maddmaxx said:

Really? OK, I’ll take it out of the recycling

Click to expand...

You want to hold on to those

 

M

maddmaxx

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• Apr 3, 2020

• #10

Ya, forgot to take it out !!

 

Slydog

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• Apr 3, 2020

• #11

maddmaxx said:

Ya, forgot to take it out !!

Click to expand...

You just threw out $150

 

M

maddmaxx

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• Apr 4, 2020

• #12

Oh well, blastys are cheap anymore at 600 bucks running....guess I’ll have to rely on the stock guard....interesting how eBay/amazon don’t have case savers for these things.

 

L

Larry's Shee

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• Apr 5, 2020

• #13

maddmaxx said:

Oh well, blastys are cheap anymore at 600 bucks running....guess I’ll have to rely on the stock guard....interesting how eBay/amazon don’t have case savers for these things.

Click to expand...

I think Ken O’Connor was making one, only available from him directly
http://kenoconnorracing.com/ns/oem_blaster_parts
Towards bottom of page

 

M

maddmaxx

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• Apr 5, 2020

• #14

$50!!!!!!! whoa!!!! I think ill take my chances instead!!!

 

Slydog

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• Apr 5, 2020

• #15

maddmaxx said:

$50!!!!!!! whoa!!!! I think ill take my chances instead!!!

Click to expand...

Keeping up on chain and sprocket maintenance helps.

 

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L

Larry's Shee

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• Apr 5, 2020

• #16

Also make sure all sliders, guides, and rollers are good

that’s nothing compared to some for banshees