Subject: valve adjustment -- what a difference! Wed Jan 20, 2021 12:40 pm
Hello,
last week I proceeded to do the valve adjustment to my GRiSO. Used the step by step on this forum -- really helpful. It was quite easy actually!
The bike has 10K miles. I found all the exhaust valve were really loose, and the intake valves, 3 out of 4 needed to be tight back to spec as well, but not as bad.
Last time the Guzzi dealer *supposedly* did them at 5K, but now I have my doubts..( same dealer that missed 1 KG of engine oil after service, which I checked after reading some horror story GRiSO without enough oil engine failure!!)
After valve back to spec engine performance has improved a lot ( already Bettle mapped with Agostini HF) ...
- No more extra pops when letting go of the throttle at high RPM - Very noticeable better RPM pick up and overall throttle response
I was surprised how a simple valve adjustment made such a huge difference.
I have a throttle body clean up and balancing in my next to do list ( per 12K service manual)... even if now I am really quite pleased by the beast
Cheers, Giuseppe
Oz1200Guzzi and Erivera like this post
Chris W Tiradritto
Posts : 348 Join date : 2019-12-05 Age : 55
Subject: Re: valve adjustment -- what a difference! Thu Jan 21, 2021 5:10 am
I had the same result when I adjusted the valves on mine. valve clearances were way off - engine response changed completely after the adjustments
Yahu Tanabuso
Posts : 62 Join date : 2022-02-06 Age : 59
Subject: Re: valve adjustment -- what a difference! Mon Apr 17, 2023 3:36 am
Chris W wrote:
I had the same result when I adjusted the valves on mine. valve clearances were way off - engine response changed completely after the adjustments
So I will ask to be sure, despite the fact that it was probably translated more than once, in the case of the beetle map we set the valves to a greater clearance . So 0.15 - 0.20? Thank you.
Chris W Tiradritto
Posts : 348 Join date : 2019-12-05 Age : 55
Subject: Re: valve adjustment -- what a difference! Mon Apr 17, 2023 3:49 am
Yahu, the valve clearance should be set to factory spec regardless of the mapping .10 & .15
lcjohnny likes this post
Yahu Tanabuso
Posts : 62 Join date : 2022-02-06 Age : 59
Subject: Re: valve adjustment -- what a difference! Mon Apr 17, 2023 4:30 am
Chris W wrote:
Yahu, the valve clearance should be set to factory spec regardless of the mapping .10 & .15
Ok. Thank you Chris
kindoy2 Tanabuso
Posts : 68 Join date : 2021-09-23 Age : 71
Subject: Re: valve adjustment -- what a difference! Mon Apr 17, 2023 10:43 am
Be careful with adding oil..make. sure the motor is hot and the motorcycle is level and dont fill it right up to the top fill line.
Oz1200Guzzi Don Abbondio
Posts : 6064 Join date : 2014-03-13 Age : 68
Subject: Re: valve adjustment -- what a difference! Mon Apr 17, 2023 6:29 pm
Always put in only 3.2 litres of oil, no more. Top up if below the half way mark on the dipstick after running for a bit. Any more and it will collect in the airbox and get into your throttle bodies.
My manual says 3.6 litres - don't, just don't!
Yahu Tanabuso
Posts : 62 Join date : 2022-02-06 Age : 59
Subject: Re: valve adjustment -- what a difference! Wed Apr 19, 2023 7:51 am
Oz1200Guzzi wrote:
Always put in only 3.2 litres of oil, no more. Top up if below the half way mark on the dipstick after running for a bit. Any more and it will collect in the airbox and get into your throttle bodies.
My manual says 3.6 litres - don't, just don't!
I bought 4 liters of Agip, but unnecessarily because after pouring liters of pouring the 3l. oil filter and starting the engine I have a state in the middle of the scoop. Last time, when I poured 3.5l, the condition was much above the norm and the oil appeared in the air filter chamber. I think that 3l.na start is enough. Yours sincerely.
beetle GRiSO Capo
Posts : 9888 Join date : 2013-09-30
Subject: Re: valve adjustment -- what a difference! Wed Apr 19, 2023 1:57 pm
When changing the oil, fill the new filter up before screwing it on, then add no more than 2.8 litres.