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BMW 3-Series (E90 E92) Forum
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+1mm Modified Intake Lift Valvetronic Supports- 'MILVs' N52
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01-29-2018, 09:23 AM | #529 | |
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Also here is pic how the shim needs to be for easier access: |
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01-29-2018, 09:29 AM | #530 |
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To clarify: Vertical with the engine. Engine is slanted. If it is vertical to the ground, then you went too far and will have issues.
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01-29-2018, 11:56 AM | #531 |
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01-29-2018, 12:51 PM | #532 |
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Maybe it would make more sense to just describe what you really want - that is, the cam lobe needs to be pointed away from the intermediate rockers so that there is no pressure on them. With the lifters not under pressure and the engine stationary, you should be able to move the rockers a little bit with your fingers. If there's pressure from the camshaft on the rockers it's going to cause problems.
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01-29-2018, 01:46 PM | #533 |
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Ok Thanks W37V. I looked over your videos, and tried it on mine and it went smoothly.
Video is worth a thousand words! With very little persuasion of the rollers, the spacer went in smoothly. From the pictorial earlier in the thread, it was mentioned they needed to be lightly hammered in, which should probably be edited out, as it leads one to believe it takes a bit of persuasion. Ideas of a thicker spacer should also be deleted....the supplied one works fine once the proper procedure is understood. Chris |
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01-29-2018, 02:04 PM | #534 | |
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01-30-2018, 08:40 AM | #538 |
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WASHERS?
So which one works best? -'plain jane' bigger diameter-0.73", 0.05" thick, 1/4" -grade 8 'gold color' smaller diameter-0.61", 0.08" thick, 1/4" -thicker 0.125" 1/4" -'plain jane' 5/16" I suspect that the 'plain jane' bigger diameter-0.73", 0.05" thick, 1/4" is the washer/spacer of choice. When I measure the 'spring relief divit' on the support it is only about 0.03-0.04" deep. It is this 'spring relief divit' that keeps the supports/MILVs from sliding out/in. On the MILVs, I could machine out the 'spring divit' so that it is flat with the bottom of the 'divit' and should slide right in without needing the washer/spacers but you would still need the washers to remove the stock supports. |
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01-30-2018, 08:49 AM | #539 |
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When I did mine on the junk head I used two washers and it worked out fine. I'm not sure why a thicker washer would cause the bolt to bend - I think that would only be caused if you still have pressure on the rockers from the cam lobe being pointed the wrong way. Otherwise the only force on the bolt will be the spring itself, which is relatively small compared to the strength of a steel bolt.
One think to consider (and why I used two washers) is some heads will have a build up on the inside of the head. On this particular one, it was thick enough that there just wasn't enough room to slide the MILVS over top of the crud built up in the engine. I'd think most N52s don't have that issue though (this one was really high miles). |
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01-30-2018, 07:43 PM | #540 |
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In my case, the double washer setup created problems because it did not fit fully under the spring. Tightening the bolt did bring the spring base down square, but that process stressed the bolt on a very small area which must have stretched it. Hass, I am guessing you backed the bolt off more than 5 turns in order to fit the double washers underneath fully?
Anyway, in my opinion for whatever its worth, the process with the one washer works well and is straightforward. However, the valve assembly on this head is a bit more complex than just about anything I've encountered over the years. A more concise set of instructions with video or good photo's will allow one to see exactly how the process works, and what the parameters are with regard to removing and fitting the spacers. This will eliminate most problems, and disallow anyone from straying from the prescribed process. Chris |
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01-30-2018, 07:54 PM | #541 |
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Yeah the washers have to be pushed all the way in so the spring sits flat.
I got some other washers to try. I also got a piece of 12-gauge(0.1046") x 3/4" flat stock and was going to make a 3-4" long with a slot on the end, sort of like a washer with a handle on it. |
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01-30-2018, 11:24 PM | #542 |
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Can I get the video, too? I'm fixing to install when my vcc needs a gasket job. Thanks a bunch!
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2015 X535i - CP Piston, Manley Rod, ACL/King bearings, MILVs VRSF full charge Pipe, Wagner FMIC, Hybrid Turbo, MHD2+ VRSF DP, UR Front/Rear Sway Bars, Eibach springs, Bilstein B6
2015 MINI COOPER - Mahle Pistons, Max Rods, BMS intake, CTS charge pipe, Wagner Intercooler, ByteTronik Tune, VRSF DP 2017 540i - MHD2+, VRSF DP, TU Pump |
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01-31-2018, 08:04 AM | #544 | |
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Yes definitely, I can see how if you only backed it out the ~5 turns and tried the thicker/double washer, that could bend something. I basically just loosened the bolt until the point where I could slide both washers in flush with the spring. I didn't really care if one came out all the way (they didn't) so I was willing to experiment a bit with it. |
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01-31-2018, 03:54 PM | #545 | |
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Thanks a bunch!
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2015 X535i - CP Piston, Manley Rod, ACL/King bearings, MILVs VRSF full charge Pipe, Wagner FMIC, Hybrid Turbo, MHD2+ VRSF DP, UR Front/Rear Sway Bars, Eibach springs, Bilstein B6
2015 MINI COOPER - Mahle Pistons, Max Rods, BMS intake, CTS charge pipe, Wagner Intercooler, ByteTronik Tune, VRSF DP 2017 540i - MHD2+, VRSF DP, TU Pump |
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02-08-2018, 03:57 AM | #548 | |
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Turned out that after the accident the bodyshop I used had flashed my ecu back to stock and erased the first BPC tune. They did this to code a new headlight module they installed. Did something happen between when you first emailed your stock tune and installing the new tune BPC sent you for MILV’s? |
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02-08-2018, 04:59 AM | #549 |
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It’s currently running on BPC tune. The last time I used it was to flash the tune on the car. Nothing changed. I get the error regardless if the device is powered by usb or by obd port. I can’t even update the device. Computer software just stops working after a while.
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02-08-2018, 05:07 AM | #550 | |
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Last edited by W37V; 02-09-2018 at 10:43 AM.. |
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