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On Mark's bike and all, as far as I can remember, others I've done it was the exhausts rather than the inlets that let go first. As far as additives are concerned ZDDP may in fact be counter productive with DLC.Yup, it's a PITA but that's the thing about using the scientific method of analysis, you always have to strive to prove yourself wrong and allow your findings to be peer reviewed.Pete
ARRRGH!NO, YOU DO NOT HAVE TO WORRY! DONT GET YOUR PANTIES IN A WAD! YOUR BIKE IS A SMALLBLOCK AND NOTHING RELATED TO THIS ISSUE HAS ANYTHING TO DO WITH YOUR BIKE!What is the word that rhymes with 'Duck'?Pete
It is perfectly possible to rollerise any 8V with flat tappets.
PS am I right in assuming that come what may the DLC WILL fail at some point?
If the DLC on a flat tappet bike has started to fail / has failed prior to rollerisation (new word??) is the DLC floating about in the oil a problem or does it just get filtered out by the oil filterI only ask as I'm in the market for a new bike and the budget puts me right in the problem years . So I wondering if I need look for a good 4V or chance the 8V with the knowledge that it can be fixed with a roller kit even if the DLC has already failed.Cheers PS am I right in assuming that come what may the DLC WILL fail at some pooint?
It's sort of like the two kinds of motorcycles - those that have gone down, and...
OH GOOD Still I saw some new flat tappets on "a well know auction site" over here from a reputable dealer's online shop for replacement tappets at �95 each (free P&P which is nice )Am I right in saying that I'd need 8 of these for a complete change out which is circa �800 - or more than a roller kit would be?
Cheers PeteI wasn't thinking of buying them, more a comment that whoever did would waste a considerable amount of money that would be better spent on rollerising the bikeI don't have an 8v bike at the moment and I trying to make sure I don't saddle myself with a mountain of pain when I upgrade shortly. Simplistically it appears that I either go for a 4v Breva/Norge or skip straight to an 8v built post 2012/13 - sheer performance isn't an issue to meIf I get anything in between it looks like I could have a bike that may or may not loose the DLC especially as I live in a cool damp climate
The is one thing I'd appreciate your input on though.If I find an early 8V and the seller says tappets are mullered but knocks a grand off the price to get it rollerisedWould that be a good/reasonable bike to take on or will the DLC that's lifted off and now sloshing about in the oil do damage elsewhere in the engine that effectively trashes the engineCheers
Depends how far it's gone. How willing are you to take the risk?Me? I'd look at a whole lot of things through a prism of experience and then listen carefully to what the vendor said. I'd buy a Flattie in a heartbeat if it had a good history but I'd also expect to rollerise it and build it into the price.You seem to be asking me for some sort of concrete guarantee as to what is a good buy! How the hell would I know? I'm just some other jerk on the Internet!Pete
There is no cure for flattus tappetus shittis other than rollerus goodus fixxus. Throwing good flats in after bad ones resembles the Einstein cliche:Insanity: doing the same thing over and over again and expecting different results.
No, I realised that. I just mourn the fact that since ten years ago this site has changed from being a place where people shared ideas and knowledge to being one where point scoring, an attitude of self righteousness and an absolute lack of humour has become the norm.Trolling and a FUCKLOAD of ignorance is, unfortunately becoming the norm on WG, just look at the names that are missing! Nobody is forced to be here.
OBTW, the "assistant principal in charge of discipline" taught me a great lesson in discretion, another casualty of our present, often lamentable times. He read the note from Ms. Crick along with mine, told me to bend over, lightly touched my butt with the "Board of Education," and told me to be more careful in passing notes. Now there's a guy who deserved a .
Chalk up another one for rollerization. At 23K miles I decided to install the "A" kit. It seems foolish to wait for the tappets to go TU and hope you catch it before too much metal has circulated through the engine. The kit was $1K and labor $.4K. Heck, I even think it's a bit quieter now! Before, my bike sounded like a can full of rocks...now, not so much.Peter Y.
I assume that your flat tappets looked perfect, else you could have lobbied Guzzi for rollers instead of throwing $1K for the kit ... ?Lannis
Chalk up another one for rollerization. At 23K miles I decided to install the "A" kit. It seems foolish to wait for the tappets to go TU and hope you catch it before too much metal has circulated through the engine...
Gents, I decided to install the kit before anything went south. Every oil analysis has been good but I started to think that 6K miles between oil changes could mean that I could have 5K miles with crap floating through my engine. Waiting until the analysis showed a problem, or excess clearance on the valves, either way I'd be closing the gate after the horse was out of the barn...so to speak. I had Redline order the kit. They installed everything and gave me the old parts. I just looked at the parts and can see one lobe of the cam that is clearly burned. The tappets themselves seem to be held in place, I thought by an allen screw, but that's not working for me. It would not surprise me to find that one of the tappets is wearing, as the cam indicates. Bottom line, the problem is real. I just caught it at the very earliest stage. BTW, I have been using 10W60 most of the time and the bike is ridden for long trips, not short commutes.Peter Y.
Bob, I was just looking at the assembly that holds the cams and tappets. There are holes that appear to be made for an allen wrench to secure the tappets. I guess they are just lubrication holes. At any rate, you have to drop the cam and the lifters fall out. Checking the lifters for wear will entail 100% of the labor of doing the replacement. It's dumb to pull everything apart and not do the swap...in my humble opinion.Peter Y.