Maserati Forum banner

41 - 60 of 66 Posts

·
Registered
Joined
·
53 Posts
These accumulators seem like a good "fix" for the variators without actually replacing them. I don't have the rattle yet but I'm installing an accumulator as a preemptive measure. You also get the added benefit of less wear on the engine at start up. Hard part is finding where to mount the thing!
 

·
Registered
Joined
·
53 Posts
Thanks suicidechopshop and slider for the parts list and oil tap location. I did the same basic install but put the tank in a different location. I wanted to be able to keep all the factory fairing under the car and also worried about hitting the tank on uneven pavement. It takes some fabricating of brackets to make it work but fits in the right side of the front bumper, behind the air insane screen. Also, I wired into the round driving lights, since I leave them on all the time and I could turn them off if I was working on the car with ignition on and didn’t want to dump the stored oil pressure. Works great, now the oil pressure light goes out before engine start, and starts are smooth and quite. Great mod!
129852

129853

129854
129855
129856
 

·
Registered
Joined
·
583 Posts
This is a terrific thread - and these accumulators, based on actual experiences thus far, seem to solve the infamous variator issue - or at least delay it's onset for quite a while.
 

·
Registered
Joined
·
53 Posts
Any updates guys? Have the variator noises came back? Any side effects? Any issues at all?
So far I am very happy with this unit. I haven’t driven my car in two weeks and the pressure is still at 30psi. I only have 4K miles on my car so no variator problem yet, so for me it was more of a preventative measure. I have noticed quieter starts in general though. The only problem I’ve noticed is this: I like to turn my car to “on” to release the pressure before start. It takes about 4 seconds for the tank to empty and the oil pressure light to go out. The problem is, the car sees the oil pressure go up without the engine starting, and then quickly fall as the tank pressure goes to zero. This throws a flashing oil pressure red light and it has to be reset with a obd II scan tool. I’ve solved this by only waiting 2 seconds with the switch to “on” before cranking. If I wait longer than that I get the code. Or you could just turn the key straight to “crank”, and you would get about one second of pre-lube, which is still probably enough. It’s great knowing I have oil pressure before starting, I want one of these on all my cars!
 

·
Registered
Joined
·
79 Posts
Thanks for the update. Good to know this could throw a code/issue. Makes sense too. I wonder how the dry sump ecu handles this? I am looking to install mine soon, maybe in the next few weeks after this virus stuff subsides.

4k Miles! your car is a baby! ?
 
Joined
·
4,687 Posts
The dry sump accumulator is not a start up device...That motor uses high pressure VVT or variator units...Older design...They have the accumulator to make sure the VVT units can act quickly..The problem with high pressure VVT units is they absorb more mechanical HP...That is why no one uses them anymore...The chambered units on the wet sump engines are pretty much the industry standard these days.....J
 
  • Like
Reactions: MattCruz

·
Registered
Joined
·
79 Posts
The dry sump accumulator is not a start up device...That motor uses high pressure VVT or variator units...Older design...They have the accumulator to make sure the VVT units can act quickly..The problem with high pressure VVT units is they absorb more mechanical HP...That is why no one uses them anymore...The chambered units on the wet sump engines are pretty much the industry standard these days.....J

That makes sense. Thanks for the clarification.
 

·
Registered
Joined
·
53 Posts
Thanks for the update. Good to know this could throw a code/issue. Makes sense too. I wonder how the dry sump ecu handles this? I am looking to install mine soon, maybe in the next few weeks after this virus stuff subsides.

4k Miles! your car is a baby! ?
I know, I should drive it more! It’s an 09”, I bought last year from original owner with 3000 miles. He had it for 10 years and never drove it. Still has original tires that I just bought replacements for. Love the car!
 

·
Registered
Joined
·
79 Posts
Wow! I would definitely drive it more before you have to replace all the gaskets! Any issues with fluids leaking from sitting all these years?
 

·
Registered
Joined
·
53 Posts
No leaks, the previous owner said he would drive around the neighborhood every week or so. Hopefully that kept them flexible
 

·
Registered
Joined
·
98 Posts
This seems like an easier fix that also turns off the engine oil light granted without the other accumulator benefits and possibly without enough oil pressure. Has anyone with a variator issue tried this to see if it will eliminate the noise on startup?

 

·
Registered
Joined
·
79 Posts
This seems like an easier fix that also turns off the engine oil light granted without the other accumulator benefits and possibly without enough oil pressure. Has anyone with a variator issue tried this to see if it will eliminate the noise on startup?

If i understand your question, that is the point of the oil accumulator. To prevent the variator knock on startup.
 

·
Registered
Joined
·
25 Posts
Hi all, thought I’d give a quick update.
All still going well here!

Hi Greek, I definitely prefer the Accumulator method than cutting the fuel. When cutting the fuel, the engine still has to crank “dry” for a few seconds as it builds oil pressure in the variators....but with Accumulator, the engine is prelubed as soon as the ignition is turned on. It is still a relatively easy and cost effective solution. I think my whole setup took about 2 hours to fit and cost less than $500.

My car is RHD in Australia with about 35,000km. I have used the small Moroso Accumulator which fit perfectly just under the engine cover next to the Brake booster on drivers side, but not sure if the same space available on the LHD cars? Seems like the guys here have come up with some other great spots to install to.

My variator noise was really bad. Now, amazing! Turn on ignition till lights go out (about 3 secs)....then start engine which starts straight away with no variator noise! As Basco mentions, if you wait longer than 3-4 secs then it can come up with flashing oil light and code as it gets confused. So I just make sure I start within 2-3 secs and it’s good. I have $200 code reader, so if light does come up I just clear it with reader.

So happy to hear that a few people have been able to benefit from this.
Cheers, Simon
 

·
Registered
Joined
·
98 Posts
I definitely prefer the accumulator method as well since it also almost works like a dry sump system which is why most people install them. It’s just so hard to find good people to do custom work in NYC at a reasonable price. I might make it a weekend project though at some point so I can have the peace of mind.
 

·
Registered
Joined
·
25 Posts
Definitely worth doing. Will never cure the variator issue but will definitely help....plus no more embarrassing startup rattle!! Yes, it is fairly DIY and could easily be completed one weekend. Just order the hoses, fittings and accumulator etc so you’re ready to go and then it’s pretty straight forward. Everything is fairly easy to get to. Good luck
 

·
Registered
Joined
·
5 Posts
Hey there, great readings! Just wonder - 2005 QP, 83k miles and running daily at the Atlantic harsh weather coast. Rattle> big time but never bugged me ...until I read this and now embarrassed! Where would you connect the hose on the dry sump engine?
 
41 - 60 of 66 Posts
Top