It had bigger intake seats fitted for the bigger valves, even the best have bad days and it seems that all the bad days were had on this one engine by multiple people 🥺🥺🥺
*that's unfortunate *Carbon buildup seems uneven between cylinders. *Do you have any idea why the seat failed? * She shouldn't be shy getting in front of the camera. Surely she look better than you😂
Either it cracked in situe and fell apart or it dropped out and came apart, unsure what actually happened but it seems like a seat or fitment failure, I've never had a factory seat dislodge so unsure at this stage
@@Grooty79 if the seat just "fell out" wouldnt it sit around the valve and damage the valve ? i thin it broke into pieces and fell down onto the piston.
@@Grooty79 Specs mate ? i made a 2.7m20 back in the day with a 288 Shrick cam and the engine exploded, we had impact marks on the pistons and the intake valve in cyl 2 broke of and was crammed so hard into the head we had to use a crowbar to pry it out of the head :D
And wasn't the crank or bearings so another big sigh of relief, butttt this is a issue with an oversized set of seats that were fitted when the 44mm valves were fitted 🥺🥺🥺
@@Grooty79 so new seats installed when assembled and machined? Only thing that makes sense to me is that the seat material was to thin and lost tension under heat and then dropped and you have the result. I feel we could repair that head at my shop I’m in Wollongong. Reach out if your wanting to discuss
@@eurocargarage_1470 thanks for the offer, yes the seats were done when the 44mm valves were done and yes they are too thin, I've measured a cross section of one of the pieces that was in the extractors and it's 2.75mm thickness and should be over 3mm and 45% of it is cut away with the throat cut, the machinist is one of the best in the business and has done all the highest hp na m20 heads in the country so I expected top notch but this has absolutely flawed me and has me questioning if anything will ever go there again,
@@Grooty79 sorry to hear that have you reach out and asked the question to see if they will do anything for you then? I’m sure it will all work out one way or another these things are sent to try us.
@@eurocargarage_1470 I've reached out but he hasn't said much back, I'll give him to the end of the week and if he doesn't make an effort then I'll start to push
Wow, such an odd thing to have happen
It had bigger intake seats fitted for the bigger valves, even the best have bad days and it seems that all the bad days were had on this one engine by multiple people 🥺🥺🥺
What a journey.
Crazy ride hey 🥺🥺🥺 worst part no one got to go in the car other than Jo and I,
*that's unfortunate
*Carbon buildup seems uneven between cylinders.
*Do you have any idea why the seat failed?
* She shouldn't be shy getting in front of the camera. Surely she look better than you😂
Of all the fkn things.. at least it wasn’t what you initially suspected..
Any idea what on earth could’ve caused the seat to dislodge?
Either it cracked in situe and fell apart or it dropped out and came apart, unsure what actually happened but it seems like a seat or fitment failure, I've never had a factory seat dislodge so unsure at this stage
@@Grooty79 if the seat just "fell out" wouldnt it sit around the valve and damage the valve ? i thin it broke into pieces and fell down onto the piston.
@@666specter666 either or, it does look like it broke up and dropped in
What cam where you using mate ?
Big roller cam
@@Grooty79 Specs mate ?
i made a 2.7m20 back in the day with a 288 Shrick cam and the engine exploded, we had impact marks on the pistons and the intake valve in cyl 2 broke of and was crammed so hard into the head we had to use a crowbar to pry it out of the head :D
@@666specter666 309degree roller 13mm lift, it has Ross forgies that had plenty of valve depth
an unfortunate discovery. however. wasnt you.
BIG BREATH!
And wasn't the crank or bearings so another big sigh of relief, butttt this is a issue with an oversized set of seats that were fitted when the 44mm valves were fitted 🥺🥺🥺
@@Grooty79 so new seats installed when assembled and machined?
Only thing that makes sense to me is that the seat material was to thin and lost tension under heat and then dropped and you have the result.
I feel we could repair that head at my shop I’m in Wollongong.
Reach out if your wanting to discuss
@@eurocargarage_1470 thanks for the offer, yes the seats were done when the 44mm valves were done and yes they are too thin, I've measured a cross section of one of the pieces that was in the extractors and it's 2.75mm thickness and should be over 3mm and 45% of it is cut away with the throat cut, the machinist is one of the best in the business and has done all the highest hp na m20 heads in the country so I expected top notch but this has absolutely flawed me and has me questioning if anything will ever go there again,
@@Grooty79 sorry to hear that have you reach out and asked the question to see if they will do anything for you then?
I’m sure it will all work out one way or another these things are sent to try us.
@@eurocargarage_1470 I've reached out but he hasn't said much back, I'll give him to the end of the week and if he doesn't make an effort then I'll start to push