Porting job gone bad?
 

Ok, so im cleaning my irons today, getting ready to assemble my engine and I notice all around my newly ported irons that there is burr marks from where my porting guy skipped across the face of my irons. They were lapped before being ported and now im wondering if with these burr marks are going to effect anything internally and if i should just start over again? All four faces have similar marks on them

Any experience, or advice from anyone would be helpful at this point as I dont want to be building a grenade. Check out the pictures below.

Thanks,
Ken
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pictures
 

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That's Does'nt Seem To Be To Bad Bro, That Type Of Burr Should Not Do Any Damage At All. The Way I See It, The Only Seal That Would Ride On Those Burr's Would Be The Corner Seals. I'll Say Even Bridge Port's Would Do More Damage To The Corner Seal That Those Burr's.

i would still be upset about it tho. you should let your port guy know, maybe he'll comp you on later work or something. and maybe save lapping until after all port work is done next time.

yeo ill save the lapping but im concerned now about the corner seals maybe catching?

What do you think?

As long as those are sanded down smooth and are low spots and not high spots, it should be a minimal issue. The only times this is a real problem is when the burr is deep and goes into the oil control ring scraping surface...a deep and long groove here can let pressurized oil bypass the scraper rings and pool up in the port, later getting pulled into the combustion chamber and burned. So you'd have a slight bit of smoke and oil burning at all times. The effect is minimal even then, though.

I don't really believe in lapping irons, but this is why the porting should be done BEFORE the lapping if you're having both done.

I've let some bits skip in my day, but I dont think I've ever been nearly as reckless as that guy. The port work inside looks great, though.

Based on the cost of replacing and re-porting all the irons, I'd probably just run 'em. IF you're wanting a 10-year bulletproof motor with zero issues, then you might want to replace them just for peace of mind.

thanks for all the tips guys this has really been a learning process for me.

Looks like a pretty sloppy porting job. If you can feel your fingernail catch in the pits, then it may be a problem. You can try and take a sanding block and carefully sand down the area. Gradually go with finer and finer sandpaper grit untill the pits smooth out. I have ported countless motors but I still put some tape around the port in case I slip.

Wow, yeah well Thats a bad port job. Look the amount of leakage that would create is negligible. I have seen this time and time again with no real affect on the internal combustion "gas sealing". The rotor is spinning way to fast to leak enough gas across this area to be an issue.

Not that I am saying this is ok. I did it once, thank God the plate was resurfaced and the marks were not deep enough to stick. But I learned to use some duck tape...pretty thick stuff.

Over all I have been doing this along time and know this will not be an issue in the operation of the engine.

Just my two cents....

Good luck

you will be fine sand them smooth but even if you didn't your still going to be fine. Don't trip on that just be upset that your porting guy is making you second guess your items. But either way your okay. but those are some sloppy ports that guy did for you

well in all fairness the guy i hired "use to be" to be one of the best. He had a stroke and lost most of the use of his right side but i still pursued him to do the job, so its more my fault then anyone. He's a really good guy, just has had some bad luck in the last couple of years, Either way i think im going to use the Irons and he said he will assist me in asembling the engine, so i know he's a stand up guy.

Ken

If you sand them smooth, it should be fine.