Just in time!

[Xlratr]

Apart from anything else we both like our wimmins and enjoy spending our spare time with them as well as playing Leather-Clad God of Speed cum Nerdy Computer Geek! 

Pete

Sounds OK! It's when you stop liking the "wimmin" that you know it's gone too far with the nerdy stuff! ;-)

I was curious because I've decided to rollerise my Stelvio (at my own cost). Not an easy decision because it's actually running beautifully. I know I could just wait until it becomes a necessity, but the idea that it probably will happen someday has started to bug me (and I'm nerdy that way! :-).
Most of my riding is long distance stuff, so when the cams do start to go, I'd probably be far from home.  So I may have to hook up the logger after the conversion and see if it makes any difference on fuelling.

I'm curious to know what the cams look like after 23,000 km.
John

[Murray]

I've got a long time to go before I hit 100000. I like the idea that I have the previous generation pushrod engine. Looking forward to check the tappet clearances for the first time.


Thanks for the info!

The rings valve guides cam followers and possibly the valves (stems) will be up for replacement before you hit 100 000 miles and you'll have probably been through two cam chains.

[jacksonracingcomau]

Interesting development. Just took bike out for a gallop and it's going to need a new map. Although Guzzi use the same GRS8V-03 map for both flat and roller tappet bikes running open loop there are obviously big differences in how the engine is breathing.especiall y at the top end. Some logging work will tell the story but probably the last 15% or so of throttle, especially in the lower gears, it's like running into a brick wall! Feels like it's going lean but I'm not going to call that,I'll wait for the log data.

Pete

Did that tell anything ? Story doesn't progress far

[pete roper]

Haven't run back through the thread Martim but my guess is that it was a cam timing issue.

[pete roper]

Nope, just looked. My engine was too far gone. I was wrong. As I've said before it is only very small people who can never admit they are wrong.

[jacksonracingcomau]

Not really what I meant, I was sure you said valve timing different on rollers, actually couldn't find post but think you were going to graph the cam timing to find exact difference.
Only cos someone asked me, thought if anyone knows it'd be you, mapping is done I know, but the graphing ?

[pete roper]

Sorry, misunderstood.

I graphed the flat tappet cams ages ago but haven't a clue where I stored the graphs! as for the roller cams? Ideal time would be when I'm building the single spark 1400 as all the roller cams are identical.

[ArizonaPaul]

Flat tappet vs roller tappet is making me crazy.  In August when I bought my new, old stock 2013 Stelvio. The next week at the 1000 mile service the dealer told me it had flats and needed to be changed. He called a week later and said the Factory said it didn't have enough miles to be changed. His words when it starts making to much noise park it.

Well, I found Wild Guzzi and all the things wrong with a Stelvio and I began to question my purchase. But, I have done all the fixes for known problems and love the bike! Except for the rollerization. Reading this topic and nothing better to do with the dog at the groomer I pulled the valve cover to check for mayo, which there was none, and looked closely at the tappets. Aren't these rollers?



Because that is what is in my bike and if the dealer did a valve adjustment and doesn't know a roller from a flat than I must have been to the wrong place. What say the bright minds of the forum....rollers or flat?

[pyoungbl]

Paul, the '13s came with rollers and that's what yours appears to have.  Checking the valve lash is child's play, no need to pay someone to do it for you.  OK, if you just don't like wrenches...that's a different discussion.  Nevertheless, the dealer does not sound like he knows much about the bike.  That alone is a good reason to do this yourself.

Peter Y

[Chuck in Indiana]

Run, do not walk away from that dealer and his "mechanic." <shrug>
Welcome to WG, BTW..

[ArizonaPaul]

Peter, I plan on doing all of my own maintenance and anything not covered by warranty. I just thought it funny that a dealer would plant the thought of something majorly wrong with a new bike.

[ArizonaPaul]

Point well taken Chuck and thanks for the welcome. This forum has been worth its weight in gold so far and I lurk a lot more than participate.

[Lannis]

Flat tappet vs roller tappet is making me crazy.  In August when I bought my new, old stock 2013 Stelvio. The next week at the 1000 mile service the dealer told me it had flats and needed to be changed. He called a week later and said the Factory said it didn't have enough miles to be changed. His words when it starts making to much noise park it.

That's the oddest thing I've heard in a while.

1)  The dealer owned the Stelvio but didn't know if it had flat tappets or not, never bothered to check.   Maybe didn't know it was an issue.   How can someone be that ignorant about the very things with which he makes his living?   I'd venture to guess that EVERY 8V owner on this list knows more than that.

2)  The dealer sold the Stelvio without knowing about flat vs roller tappets.

3)  The dealer "performs the service", "talks to the factory", and still thinks it has flat tappets in it.

4)  Then he recommends running it until the engine is destroyed ("making noise").

In today's world, I'm afraid that I'd have to consider every Guzzi dealer that did NOT use the best Guzzi market and technical research tool on Earth ("Wildguzzi") as a daily or weekly resource as unfit and incompetent to even BE a dealer ....

Lannis

[pete roper]

And people ponder why Guzzis aren't popular?

My guess is it's just had an oil change, nothing more. Give it a full service and see what has been missed.

Pete

[Chuck in Indiana]

And people ponder why Guzzis aren't popular?

My guess is it's just had an oil change, nothing more. Give it a full service and see what has been missed.

Pete

Yeah. Probably a $400 oil change.   

[nobleswood]

Point well taken Chuck and thanks for the welcome. This forum has been worth its weight in gold so far and I lurk a lot more than participate.

Welcome !

There's alot to read up on here! Many of us lurk