Author Topic: So, just when I thought I had all my problems fixed......video (Read 26555 times)

Jimbo45 · « **Reply #45 on:** March 12, 2015, 12:07:52 AM »

Headed back out. I need a beer.......

Jimbo45 · « **Reply #46 on:** March 12, 2015, 12:09:29 AM »

Quote from: broken1;51463

I wonder if that "oem" headgasket the clown sold you is even oem. This is an oem atc gasket & the rivets & rivet tabs look different:

and this used one is a trx gasket, I checked the rivet tabs against the new oem gasket I put on my bike last year & there the same:

Yep, I have an true OEM used gasket here that came off of one of these top ends,,,,,,the rivets don't look like the ones on the "ground OEM". Those big rivets SUCK!

Pumashine · « **Reply #47 on:** March 12, 2015, 12:10:35 AM »

Quote from: Jimbo45;51462

The ground "OEM" gasket I bought looks identical to the Tusk one I have here, rivets and all. I don't think the ground one I purchased was made by Honda. It appears that it was Tusk. Might be a good gasket, but those rivets are a problem!!!!!!!!!!

OEM does not have brass rivets. You should be able to place the gasket on the head to see if the rivets clear and the bores line up

Jimbo45 · « **Reply #48 on:** March 12, 2015, 12:26:34 AM »

Yeah, Tony, my quotes around OEM were meant as sarcasm. It's NOT an oem gasket. Lol

Jerry Hall · « **Reply #49 on:** March 12, 2015, 12:29:57 AM »

Quote from: Jimbo45;51458

Well, I have it apart. I learned a few things.....

Here is the head I took off......obvious where the combustion gases were leaking into the coolant passage.....

Here is the shot of the deck before I wiped anything off (no sign of gases leaking on the cyl side of the gasket).....

Here is the head side of the gasket where the pressure leak was. Notice how it is right in the middle of the front water passage. Hmmmmmmm.......

Why was that pressure leak right in the middle front of the head? Well, see that little smashed part of the brass rivet that holds the gasket layers together?........

The smashed rivet even made a part circle mark on the outside edge of the head:

Interesting. I am assuming the dam rivet held up the head in that spot, and made the gasket not seal. It is obvious to me. Look even the rear rivet has a smashed part where it got smashed in between the head and cylinder.....

Lesson that I learned......OEM style gaskets are great, but you need to remove the rivets or at least cut away part of them, so they don't get wedged in between the head and cylinder.

Why is this not happening to anyone but me?

Tony, here are some pics I took of the deck height, above the piston at TDC. I didn't measure, but it appears there is at least 1/16". I put my new OEM gasket on there, and held it down hard with my thumb, and it appears it has good clearance from the piston, so I am gonna put the new OEM style 3 piece gasket 66mm gasket on there with the head I just lapped, AFTER I REMOVE HALF OF THE RIVETS, and CROSS MY FINGERS!

Here is the head I hand lapped:

It looks like the head is not machined for the big piston and the piston is hitting the head very lightly. A piston hitting the head may also cause the gasket to leak.

Jimbo45 · « **Reply #50 on:** March 12, 2015, 12:36:27 AM »

Yeah, Tony, my quotes around OEM were meant as sarcasm. It's NOT an oem gasket. Lol

Jimbo45 · « **Reply #51 on:** March 12, 2015, 12:38:50 AM »

I

Quote from: Jerry Hall;51470

It looks like the head is not machined for the big piston and the piston is hitting the head very lightly. A piston hitting the head may also cause the gasket to leak.

Jerry, those are two different heads you are seeing in my pics. The one with the black streak is the one I was running, and may not be sized. the last head picture that is cleaned up, came with the top end that I bought on this cylinder. It measures close to 69 millimeters where the dome starts.

Jimbo45 · « **Reply #52 on:** March 12, 2015, 12:41:46 AM »

I just took 45 seconds and cut half of the rivets off of the tusk 3 piece gasket that I have. I am going to try to use this with the lapped head that I have. we will see what happens

etccb · « **Reply #53 on:** March 12, 2015, 01:00:51 AM »

Is this part being sold as a modified oem and it's not oem?? Defiantly sold and bragged about and promoted for this exact oem bb fix. At a minimum it wasn't done being modified. What a shocker. smh. And the people that make and sell those original gaskets to poor unknowing R owners is another smh.

JesseA420 · « **Reply #54 on:** March 12, 2015, 08:32:29 AM »

Quote from: Jimbo45;51377

"guaranteed"

:hyp::hyp::hyp::hyp:

Hawaiiysr · « **Reply #55 on:** March 12, 2015, 12:04:17 PM »

"lol"

broken1 · « **Reply #56 on:** March 12, 2015, 07:00:47 PM »

Unbelievable! I checked the other site & coc says it's not the rivet causing the issue, it's because the sealing surfaces aren't flat. What a maroon!

mandom250r · « **Reply #57 on:** March 12, 2015, 07:20:19 PM »

:rofl::rofl::rofl::rofl: your on a roll there jesse. i got my ab workout today lol

fearlessfred · « **Reply #58 on:** March 12, 2015, 07:54:51 PM »

Quote from: broken1;51525

Unbelievable! I checked the other site & coc says it's not the rivet causing the issue, it's because the sealing surfaces aren't flat. What a maroon!

I read that also ,its funny that its always the customers fault that he sells and builds crap .Jimbo,don't forget to take another look at your jetting once you get the head gasket fixed .The piston was definitely hitting the head you pulled off

dem3500 · « **Reply #59 on:** March 12, 2015, 09:35:04 PM »

Quote from: broken1;51525

Unbelievable! I checked the other site & coc says it's not the rivet causing the issue, it's because the sealing surfaces aren't flat. What a maroon!

Is that where this gasket came from?