Buying a "blue printed" head

[cole0324]

Is there a way to tell if a head is really blueprinted on ebay? Any thing to ask the seller or watch out for?

 

[mmisterbungl]

yeah ask to see pictures of the combustion chamber, intake and exhaust runners and ask what kind of 'valve job' he's done on the head for starters.

what kind of engine is it?

 

[Jeff Clark]

Cole anyone selling anything on line as "blueprinted" fits in the same as "3/4 race cam" is a total ass hat just stay away.... Im not sure what your doing but real shops offer a service, Im not going to go into my history but no "real" performance engine builder will ever say blueprinted.....

 

[kiwiandy]

By definition "Blueprinted" (a term I havnt heard used much in the last few years) meant pulling down an engine and perfecting the factory parts and tolerances. ie. Bore sizes perfect and parallel, rods and pistons perfectly weighted and balanced along with the crank and flywheel etc. It may have also extended to CCing the ports etc. I agree with Jeff and his 3/4 race cam analogy. Buyer beware.
Andy.

 

[mmisterbungl]

he's just talking about a head. I'm assuming the seller (hint hint, show us a link) has done some milling/porting/polishing and is calling that "blue-printed".

 

[cole0324]

Sorry for the delay. This thing didnt email reply's? Yes it was just the head not the cylinder etc. Can't find it now. I see if I can and post it. Some one asked what motor-briggs 5hp. My guess is that it's a head off of a "blueprinted" motor. I'm just wondering if there is a way to prove it. Ebay has gone from a big garage sale to a big rip off these days.

 

[cole0324]

Here is an example.........racing briggs,5hp,old style head,cut,USED,TAKE A L@@K!! | eBay

this one doesn't say blueprinted but how do I know it's any better than stock? His feedback is pretty low also.

 

[mr.modified]

Here is an example.........racing briggs,5hp,old style head,cut,USED,TAKE A L@@K!! | eBay

this one doesn't say blueprinted but how do I know it's any better than stock? His feedback is pretty low also.

Doesn't look like much has been removed to me, there's still an edge around where head sits over the cyl.

 

[125ccCrazy]

Here is an example.........racing briggs,5hp,old style head,cut,USED,TAKE A L@@K!! | eBay

this one doesn't say blueprinted but how do I know it's any better than stock? His feedback is pretty low also.

that head is stock, he might have ran it over some sandpaper to clean up the old gasket stuck to the head...You have to be careful with that guy, he sells alot of crap and always says it's a racing part....

 

[cole0324]

Doesn't look like much has been removed to me, there's still an edge around where head sits over the cyl.

Thanks Mr Mod. thats the type of info I'm looking for = How to tell. If, it's possible with pictures.
I personally have never seen or held a modified head so just wondering what to look for.

 

[scumbucket]

Do you have a stock head? if so just have it cut.

 

[cole0324]

Do you have a stock head? if so just have it cut.

????????

How?
By who?
Is there a thread for diy? Nevermind I'll search