Thank you.
24000, can you confirm that the valves marked "QPV10" are the "odd/even" valves. i.e. One valve is used for gears 1, 3 and 5. The other is for 2, 4 & 6. On the F355, these are the EV1 & EV2 valves. Thanks!
there are 2 types of solenoids, one with yellow label and 1 with white label. it has been confirmed that each type is identical to qq ones. i.e. i replaced all of my solenoids using the qq ones. which one is odd/even solenoid, i dont know, the solenoid is 3 miles from me, i haven't been able to reach that place yet since we are flooded recently
about the f1 sensors on the actuator. I found a couple of aftermarket ones. but, please read this post https://www.ferrarichat.com/forum/threads/trying-to-understand-the-f1-actuator-sensor-wiring-pinouts.578408/
Ugh... Getting conflicting information from various sources. One website says that EV1 and EV2 are "QPV" type valves. The 360 workshop manual says that EV1 and EV2 are PPV "pressure proportional" valves. Anyway, the QPV valves have yellow labels and the PPV valves have white labels. Going by the 360 workshop manual, the EV1/EV2 "gear engagement valves" or "odd/even" valves are PPV valves. 24000, I'll send you a private message. I may need to buy some valves from you after all. The supplier jacked up his prices after I ordered, so YOYCart.com offered me the option of cancelling. Hope your weather improves soon
let me tell u a secret, don't tell anyone i am an experimental junkie and i broke numerous things since im a kid. one thing i didn't break, is that, i installed all of the valves using yellow ones. guess what. the car drives good and you won't notice anything. but i didnt test it on track, only on public roads with not-too-agitated driving style. so, forget about ppv ppt ppc pp whatever, there are only 2 kinds: yellow and white. white is a lil cheaper than yellow and yellow can replace white with no ill effect on my 100 km of testing.
I had a long conversation with a nice gentleman at SequParts and after much debate, he agreed that his website had the wrong names on the valves which they had for sale. He will correct this shortly. Basically.. EVF (clutch solenoid valve) is a QPV type. EV1 and EV2 (gear engagement) are PPV type valves. EV3, EV4 and EV5 (gear selection) are QPV type valves. Unfortunately, not all valves are "created equal". When it comes to part numbers, the waters get a little muddier. I've seen parts with the same "PPVxx" numbers and "1957xx" numbers on them, but they look different. If you're ordering these valves, I'd insist on photographs of the parts they have for sale. Also, send them photos of the valves you need.
Here's some info from my thread that may help EVF - Clutch solenoid I've fitted a brand new EVF solenoid as I wasn't happy using the one from my old system even though it was fine - I'd rather everything in the system was new. Image Unavailable, Please Login I need to correct a typo in my previous update: the original clutch solenoid was a QPV02 type not a PPV02. There are two types of solenoid used in the F1 system: - Proportional pressure valve: pressure in the circuit is regulated by the valve and modulated buy a PWM signal; - Proportional flow valve: flow through the valve is modulated by a PWM signal. The PPV valves are labelled PPV and the PFV solenoids are labelled QPV. he clutch circuit uses a QPV type to fill the release bearing with a specific around of fluid which in turn moves it a known distance along its shaft. EVFs always used to be the QPV02 type but Ferrari now supply a QPV14 solenoid when 248091 is ordered, The selection solenoids in my system are already on QPV14.
Interesting. Thanks, Mark. This is getting more confusing though. I'm looking at an online advertisement for a used 360/430 Power Unit. It has the following valves: EVF: QPV04 (blue label) EV1/EV2: PPV02 (white label) EV3/EV4/EV5: QPV02 (yellow label) You ordered an EVF valve (QPV02 which is now QPV14) for your F430. Does this mean that QPV02 = QPV04 = QPV14? Or do, perhaps, earlier cars have 3 different types of valves and later ones, 2 types? The Ricambi America site has the following for the Maserati EVF & EV3/EV4/EV5 : QPV (no number, but 4 off) EV1/EV PPV (no number, but 2 off) I see in one manual, the EVF is called a "delivery proportional" valve.
QPV and PPV denote the type of valve. This is a fundamental difference in the way that they operate and means valve types are not interchangeable. The numeral suffix is of less importance - sometimes it is a revision to the part; a change of supplier, or an improvement (manufacturing cost or part performance), but I've also seen it can denote a more significant change such as the filter system or the design of the exposed shaft of the valve. If you take a look on the Ferrari parts system for later F1 equipped cars e.g. 599, F430, the numeral suffix is clearly specified for some cars, so there must be an operational difference somewhere, however small...
A very useful thread to build on for future reference....great info and thanks to those who’ve participated. It makes sense the clutch is a QPV as the release bearing position for a given volume of fluid will or proportional. The valve has a central position as it needs to move in either direction to open or close the clutch. There is a parameter for the SV voltage at that central position in the TCU. The engagement SV’s need to be pressure proportion to allow slow and quick changes depending on what the TCU is calling for.
Going back to the start of this thread I'd ordered a few valves from a HK supplier. They were listed as the QPV02.CK.0002962.A valves as per the one on my car and ~£60 each landed in the UK. When I tried to order the QPV02 none of the suppliers had them and all quoted the QPV10 as a replacement. Mark above used QPV14 which is listed as a replacement for the 430 and Maserati's whilst the 360 spares diagram does not list the EVF as a spare part. I've tested the SV off the car fine but what that doesn't tell me is if the porting profile is correct. I'll only know that when it's fitted in the next week or so but from memory 24000 RPM fitted one to his CH car and it worked (well enough for him to side swipe a wall ) I'll update once tested...….It would be really interesting to decode these valves to understand the differences. I believe they're made by Eaton who make a lot of industrial SV's but the codes are dedicated to the Marelli systems and no doubt unpublished.
i have a problem finding the right part for my 2004 ferrari 360 modena F1 i need part number 6 from the image (EVF) this is a sticker from my part Image Unavailable, Please Login Image Unavailable, Please Login
Tricky one. Blue labels seem to be reserved for clutch valves (QPV type). On some cars they are interchangeable with the other QPV valves (gear selection). What part number are your gear selection valves (#8 in your diagram).
You may have to take a chance and fit the yellow-labelled 195717's in the clutch position. https://www.sequparts.com/product/qpv02-solenoid-valve-ferrari-f1/ I haven't been able to find a photo of the end of the QPV04 valve to see if it matches the QPV02/195717. Unfortunately, the only alternative, a new power unit, is very expensive. Have you tried ultrasonic cleaning? Was the F1 TCU faulting the valve?
The TCU has estimated the leak at 129.6cc/min. ,and usually 15cc/min 30cc/min is considered a max value where the electrolvalve should be looked at.
Ratarossa did a rebuild on a CS actuator, and he took a lot of pictures. I did a quick search on youtube and found Part 3 of his effort.
I came across this thread while trying to cross-reference some part numbers for a Maserati Gransport. If it will help anyone, I'm trying to refurbish the existing solenoids. I spoke to an aerospace tech who works on spool valves (this is what they actually are) and he's given me some ideas to follow through. You'll be able to find me pretty easily on Maserati Life, and I've got a thread about it over there. I'll put the process up on youtube as well - success or failure. You'll find it all popping up over here https://www.youtube.com/user/ShiftMotoring If everything arrives in time, hopefully I'll have something by the end of this week specifically on the solenoids. I've got two sets of transmissions/power units/pumps etc for my car, and I'll be pulling everything out and going over all the specifics about how it works, and how to diagnose and address faults. A lot of the parts are shared between the 355/360/430/575 and the 4200/GS/GT so it might help you DIY guys a bit. I'll also be tearing down a trans axle and look at rebuilding the diff and such. Below are some photos of the clutch solenoid. Leakage rates on this one were >130cc/min so if I can fix this I can definitely get them right. Originally I just kind of hacked at it with a ground screwdriver, but I've had a custom socket tool 3D printed that will fit the end cap so I can do it properly now that I believe they're salvageable. As for costs, if this works, it would be between $400 - $600 AUD per set of six, but I will have a solid idea once I've tested everything. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Anyway, I'll post an update on it here when its done Wish me luck!
What causes leakage? Worn shaft? Broken springs? Faulty coil? I think you'll be limited as to what you can do with the valves. I've hacked into one 360 valve with a grinding wheel and realised that you're in trouble if the solenoid coil is open or short circuit. The top of the case (near the plug seems to be cold-rolled around a metal former). Basically, the case which is quite thick, it wasn't meant to be reopened. Image Unavailable, Please Login Image Unavailable, Please Login Also, F355s have different valves. So you'd need different tools. Image Unavailable, Please Login I have heard of guys already looking into repairing or trying to remanufacture parts for these, but they seem to disappear down rabbit warrens. Good luck!
Here's a close up of the top of the case showing how the case is sealed by rolling the top over the metal former Image Unavailable, Please Login It's rolled with such precision, it doesn't damage the green o-ring.
I won't disappear, you'll either hear about a success or a failure! I'm not going to try and repair the coils, you're 100% right that is a sealed non-serviceable unit and not what I'm looking at. As best I can tell, 99% of 'failures' are excessive internal leakage, which stresses out the hydraulic pump and can also hold the actuator in partial engagement; that is the issue I'm seeking to address. The spool (shaft) is a precision machined part, and is specifically matched to each valve (the solenoid). The surfaces can wear if debris is introduced to the system, and as best I know it will usually be the valve that will wear as the spool is hardened. What this means is that is non-trivial (but not impossible) to repair a worn surface through honing and polishing. If you do that, then you'd need to make another matched shaft. The other type of failure is the spring. The spring is a calibrated bias spring and from repeated use they lose their bias. This is why the clutch leakage has an individual callout on the scan tools and the others don't - it is the one to fail as it goes through the most cycles. There are really good odds that the only part that fails on these things is the bias spring. I've got a bunch of calibrated springs on the way after measuring the initial spring bias. The spring should be resisting the high pressure side, and as it fails it compresses more when the solenoid isn't activated. I'm learning this as I go, so hopefully I haven't misunderstood the high-low side interactions, but I'll find out soon enough! Parts are on their way!
does anyone know if this is the same, will that part work on the F360 (EVF) Image Unavailable, Please Login
I can't confirm it, but when I've seen these parts cross-referenced before they always use that as the part number equivalent. Do you have one of those valves out of the car at the moment?
