Greetings, at this moment I have a bmw e46 328I m52tub28 with turbo holset hx30 and stock internals with stock Head Gasket (10.2:1 CR). I am interested in a safe build, but I have not found in ARP catalog a suitable configuration for m52TU engine (Aluminium block.). I'm also interested in thicker MLS Head Gasket. I am looking for a safe build, assuming that the fuel in my country is not of the best quality (90oct). What studs and Head Gasket do you recommend me? (Head gasket thickness and ARP stud reference)
Thank you so much, have a nice day.
Have you looked a ces cutring combo spacer kit with arp hardware by chance
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Does CES sell one for the newer motor?
Hi, I was looking at the CESmotorsport website and only found kits for E36, I'm worried about the aluminium block of m52tu (e46). are the M52 kits compatible with the M52tu?
I don’t think so. Cometic might make a thicker MLS gasket to lower CR.
use the Athena cutring gasket and spacer, and use raceware studs for M54
Didn't think about that but as already stated Athena cutring ex.
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Thank you for your reply. I apreciate if you share me the link with the studs.
RWE-1054,
like these:
https://www.turbozentrum.de/Zylinder...i-M54-RACEWARE
You can use ARP 350z main studs as m52tu/m54 head studs if you are looking to save some money over the racewares.
Will they work on m50tu motor, would like to pinch penny's if the option is available. I didn't know that there were other companies that offer hardware other than arp.
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They are too long to use on m50tu unless you cut them down (I did)
I have read this somewhere to, but that thread never received a follow up. who used this? and how long was it ok?
found one thread from an english bloke somewhere who was using it. but his last post was him installing the head studs.. that doesn't give me that much confidence
The 350z part number
https://arp-bolts.com/kits/ARPkit-de...?RecordID=1129
this would be it, but I am saving up for the raceware kit (if still available). if BA114 says something is good, I believe him
also, I have received numerous times that using the stock headbolts shouldn't be an issue for less then 1.0 bar on my HX35.
so I'm good for now.
Car runs great. Makes mid 400's on 93 I would assume, but I haven't had it on the dyno yet. Other parts in the drivetrain keep breaking.
Ill be using these studs with timeserts in a 2.8 M52/54 this winter. I expect no problems. We know the studs are pretty good and support 500whp on a stock gasket in the iron block motors.
Do you know to what spec he torqued them? or to how much will you?
.140 MLS is not a great solution, failure rates are pretty high even with good prep work. Cut ring gasket and spacer is a far better solution. Or do you have E85 or any kind of ethanol gas stations? You can run the stock head gasket and just change the studs and make quite a bit of power on an ethanol mix.
Please don't spend 433 Euro on Raceware hardware, ARP will do the exact same thing. Your limiting factor isn't the clamping load due to the material on the stud, but the aluminum in the threads in the block.
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true, However, i did some measurements (guesswork based on PEI330CI M54 dissection) and I came up with the following numbers:
I use a 0.140inch MLS gasket (which is holding up now for approx. 15k km without issues)
the measurements i did:
mm inch head ~77mm 3,031496063 headgasket 3,556mm 0,14 block ~6mm empty space 0,236220472 ~40mm of threaded hole 1,57480315 total length approx. 126,5mm 4,982519685
The raceware studs are 127mm (5inch) long. and will therefor have ~(40mm-the nut and washer) of thread engagement in the block (205.000psi tensile strength). - Edit: (~27mm thread engagement)
The ARP #201-4302 are 114,5mm(4,515inch) and will have ~(28mm-nut and washer assembly) of thread engagement in the block. (not enough, will strip the threads in the block).- Edit: (~15mm thread engagement)
The VQ35 ARP #202-5801 are 130,8mm (5,15 inch) will have ~(44mm-nut and washer assembly) of thread engagement in the block (190.000psi tensile strenght).-Edit: (~31mm thread engagement)
OEM headbolts with this headgasket has ~23mm thread engagement
All are M10x1.5
If had some mail conversation with ARP about this, but they do not sent an of the shelf solution for this. that is the reaction that i get.
i took these "measurements" from a picture loaded into my cad system and scaled it to sizes that I know,
It would be really helpful if someone could tell me what the actual sizes are.
Edit: ARP replied that the nut+washer assembly of their kits is approx. 0,525inch (13,3mm)
Last edited by et89; 10-05-2019 at 05:57 PM.
I just did some measurements on my M54B30
head + washer ~73mm
block ~ 7mm empty space (big-serted)
25mm threaded (big-serted)
~ 47 mm to the bottom
Just a little feedback.
I did install those VQ35 ARP, everything went good. But since the nuts are 12mm 12pans I couldn't use the special tool for bmw head bolt and had to remove the camshaft.
Also becarfull because one of my big-sert was only at 6mm flush from the block (instead of 7-8mm) and I had only 1 mm left for the nut to be stop by the none threaded part of the stud.
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