[Slider429]

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?

Hi, Sorry, I don’t have much experience with the Dry Sump engine, BUT I do believe there is another thread on this forum that deals with these. From memory the dry sump cars have an accumulator mounted under the intake manifold? One guy T-eed an aftermarket accumulator into the line that runs from original accumulator to variator feed line. I’ll see if I can find the thread for you.
Cheers Simon

 

[Slider429]

This thread talks about Accumulator install in Dry Sump:

Variators noise report

It’s been two and a half years now since I added my 2007 QP to my collection and I have to say I do enjoy it, it’s a 4.2 drysump sport with Cambio corsa gearbox , I spent all my working life working on what we refer to as exotic cars and as such the mechanic in me cringes every time I hear the...

www.maseratilife.com

 

[Slider429]

This thread shows photos of where the Accumulator hoses connect to the head. You could T an aftermarket accumulator in there:

Accumulator

Hey guys, im hearing a noise kicking on thru this pipe.(Passenger side front of engine). It tees off under the manifold and goes to the passenger and drivers side. I dont hear it coming thru on the drivers side, only passenger. I can hear it standing next to the car, and especially with a...

www.maseratilife.com

 

[marky5515]

Hi,

I read through this thread a month ago and decided to install an oil accumulator as a protective measure against Variator degradation/failure and to lessen cold-start wear.
My 2009 QP S w/83K miles is not exhibiting the telltale Variator rattle and I want to keep it that way.

I studied the three installations reported here and made some small mods.
For my installation:
1) Chose the passenger side front air dam location
2) Angled the accumulator with a steep upward tilt to facilitate purging of potential accumulated air pockets.
3) Used a 36" 4000 psi hydraulic hose with 5/8" JIC (7/8-14 thread) fittings (AN10 equivalent) between the accumulator cylinder and the engine oil gallery inlet
4) Routed the pressure gauge to the engine bay and added a wireless remote oil pressure display.
5) Used a ATM tap on eng compartment fuse F93 to power the solenoid valve
6) Installed a timer to close the valve after start-up - keep valve open long enough to refill/pressurize the accumulator (set mine at 7 minutes).
7) Used a SS solenoid valve rated for 230 pisg.

Pictures are attached.

Note:
I performed several 60 psig overnight leak checks before installing in the vehicle.
JIC flare fittings require significant torque to seal properly.
The working space at the oil inlet gallery is tight - I modified two open end wrenches to work in this space.
The Canton Racing 2 Qt accumulator (4.25x12") fit perfectly and is extremely well made. Its well worth its $220 price tag.
The two brackets are 0.105" (12 Gauge) steel and were simple to drill and bend. They attach to the Canton T-bolt clamps - but at one side only due to space limitations.
I pre-filled the accumulator with 1.5 qts of oil before installation to make sure the first pre-oiling purged all air from the lines.

Thank you to the three Users that provided detailed info on their installations.

Mark

 

[Slider429]

Hi,

I read through this thread a month ago and decided to install an oil accumulator as a protective measure against Variator degradation/failure and to lessen cold-start wear.
My 2009 QP S w/83K miles is not exhibiting the telltale Variator rattle and I want to keep it that way.

I studied the three installations reported here and made some small mods.
For my installation:
1) Chose the passenger side front air dam location
2) Angled the accumulator with a steep upward tilt to facilitate purging of potential accumulated air pockets.
3) Used a 36" 4000 psi hydraulic hose with 5/8" JIC (7/8-14 thread) fittings (AN10 equivalent) between the accumulator cylinder and the engine oil gallery inlet
4) Routed the pressure gauge to the engine bay and added a wireless remote oil pressure display.
5) Used a ATM tap on eng compartment fuse F93 to power the solenoid valve
6) Installed a timer to close the valve after start-up - keep valve open long enough to refill/pressurize the accumulator (set mine at 7 minutes).
7) Used a SS solenoid valve rated for 230 pisg.

Pictures are attached.

Note:
I performed several 60 psig overnight leak checks before installing in the vehicle.
JIC flare fittings require significant torque to seal properly.
The working space at the oil inlet gallery is tight - I modified two open end wrenches to work in this space.
The Canton Racing 2 Qt accumulator (4.25x12") fit perfectly and is extremely well made. Its well worth its $220 price tag.
The two brackets are 0.105" (12 Gauge) steel and were simple to drill and bend. They attach to the Canton T-bolt clamps - but at one side only due to space limitations.
I pre-filled the accumulator with 1.5 qts of oil before installation to make sure the first pre-oiling purged all air from the lines.

Thank you to the three Users that provided detailed info on their installations.

Mark

Wow! Impressive work!
Happy to see it help someone else

 

[marky5515]

Wow! Impressive work!
Happy to see it help someone else

Thanks so much Slider429...could not have done it without your work!

BTW - I set the timer now to just 60 secs. My diaphragm valve (as with most) prefers to flow in one direction (I have flow oriented to empty the accumulator).
For the backfill into the accumulator - the valve does not seem to care if the solenoid is energized or not.
Even unenergized It simply pressurizes to max engine oil pressure (~60 psig) and holds it (so it is acting as check valve in the backfill direction) - releasing into the engine only when the solenoid is energized. I have let it sit for a few days and it holds the 60 psig no problem.

Here is the timer I used.

PEMENOL Timer Relay DC 12V 24V Time Delay Relay Controller Board Digital LCD Display Timer Switch Trigger Cycle Module for Smart Control - - Amazon.com

PEMENOL Timer Relay DC 12V 24V Time Delay Relay Controller Board Digital LCD Display Timer Switch Trigger Cycle Module for Smart Control - - Amazon.com

smile.amazon.com

Here is the TPMS I used (on the air side of the accumulator of course).

https://smile.amazon.com/gp/product/B07SKNRMCN/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

(I drilled out its alarm).

Here is the kit I used to remote the pressure gauge:

Amazon.com: PTNHZ UNIVERSAL Turbo Oil Feed Line Oil Return Line Oil Drain Line Kit 1/8 NPT 4AN T3 T4 T3/T4 T04E T70 T66 T67 GT35 GT45: Home Improvement

Amazon.com: PTNHZ UNIVERSAL Turbo Oil Feed Line Oil Return Line Oil Drain Line Kit 1/8 NPT 4AN T3 T4 T3/T4 T04E T70 T66 T67 GT35 GT45: Home Improvement

smile.amazon.com

Here is the oil gallery port adapter to 5/8" JIC

Tompkins Industries 7400-10-22 Male JIC to Male Metric, 7/8-14 x M22 x 1.5, Steel: Amazon.com: Industrial & Scientific

Tompkins Industries 7400-10-22 Male JIC to Male Metric, 7/8-14 x M22 x 1.5, Steel: Amazon.com: Industrial & Scientific

smile.amazon.com

AN10 would work fine here too - even easier as 4000 psi JIC is pretty stiff.

Also note this routing is very short and direct - clears everything - no chafing.

Thanks again,
Mark

 

[Rennz]

Due to my lack of awareness, I didn't realize there was a DIY section to post this stuff at the time. So, I'll just ad a link to my accumulator install thread here where it belongs .

Oil accumulator install | Maserati Forum (maseratilife.com)

 

[Slider429]

Nice work! I just have the smaller Moroso accumulator in mine which fit perfectly under the engine cover on drivers side and also looks factory. But mines RHD. So not sure if it would fit on LHD cars. Mine did have variator rattle and this upgrade works perfect!! Plus agree it was an interesting project!

 

[Rennz]

Nice work! I just have the smaller Moroso accumulator in mine which fit perfectly under the engine cover on drivers side and also looks factory. But mines RHD. So not sure if it would fit on LHD cars. Mine did have variator rattle and this upgrade works perfect!! Plus agree it was an interesting project!

Thanks. Yeah, my placement options were scarce without cutting things up.
I like the idea of adding the tire pressure monitor.

 

[marky5515]

Hi Rennz and Slider429,

The remote pressure monitor is working well - though because my solenoid valve is acting as a check valve (accumulator refills when de-energized) - it simply rises to some peak pressure (~60psi) and stays there (until next start-up).
The timer (set to 60 sec) is of benefit as there is no need for me to keep the solenoid energized continuously - unless racing I suppose (to buffer against starvation in high lateral Gs)).
I like your setup Rennz and almost did the same (measured and started making the brackets).
In the end I decided I wanted the steep upward tilt and - if I had a belt break on a deserted highway - I wanted to maintain quick access.
Nice to see the different approaches implemented. Helped me alot.
Looking at doing it for my other cars (Jag XJS and Ford Explorer).
BTW - I also had to make special tools (widen and shorten two open end wrenches) to tighten the fittings at the oil gallery inlet.

Mark
PS: I considered mounting it high - per pic - it does fit here but elected not to because of concerns about heat soaking the accumulator and the blue anodizing did not match.