Technical Hydra Performance 135 Leichtbau State of the Art Thread

Aaron

Lieutenant
Nov 3, 2016
506
Colorado
I definitely won't have the pipes meeting each other where the hump is. I have s good 4" gap between the outlet and FMIC tubes. So I use about a 6" piece of silicone, and I'll probably go 7 to have a bit more forgiveness this go around.

I figured that because this kit isn't n54 specific,,that there'd be more to just a torque spec for these bolts being used with these rods. Thanks for the info!
The spec is actually for the bolts, not for the engine, so it's ARP driving the specs based on the properties of the bolts themselves, regardless of what you install them on.

I got around 55-60 lbs before I hit the desired stretch, and 42 did not stretch them enough. Will it make a difference if you only go to 42? I doubt it. The tools to measure stretch are expensive, require a knowledgeable helper, and finicky to use. So it's your call.
 

gmx

Lurker
Dec 8, 2017
16
S55 block + N53 head = S53 :p

Time will tell whether this will actually be possible, in conjunction with an MSD81 DME, but I will do everything in my power to make this a reality. My #1 priority is to get my car up and running ASAP, the S55 block swap is not an immediate concern -seeing results from my hodgepodge of parts is...
You can keep hydraulic steering pump with this setup or need to convert?
 
Jun 4, 2017
843
I definitely won't have the pipes meeting each other where the hump is. I have s good 4" gap between the outlet and FMIC tubes. So I use about a 6" piece of silicone, and I'll probably go 7 to have a bit more forgiveness this go around.



The spec is actually for the bolts, not for the engine, so it's ARP driving the specs based on the properties of the bolts themselves, regardless of what you install them on.

I got around 55-60 lbs before I hit the desired stretch, and 42 did not stretch them enough. Will it make a difference if you only go to 42? I doubt it. The tools to measure stretch are expensive, require a knowledgeable helper, and finicky to use. So it's your call.
You should use this type of hump hose coupler then if you have that much of a gap.
7FC4B959-30F0-4A46-9263-E3704BDF5ED9.jpeg
 

Hydra Performance

Corporal
Platinum Vendor
Jan 31, 2017
181
You can keep hydraulic steering pump with this setup or need to convert?
In theory, I will need to convert, but in practice I will try and figure out a way to retain my existing pump and (M3) rack.
 

Traf

Specialist
Aug 3, 2017
88
The M3/1M steering feels better than the electrical M2/M3/M4 steering anyway
 

JuniorB

Corporal
May 9, 2017
238
Rhode Island
I'll go off your torque specs, this is what I was looking for. Someone who has done these before in the same situation. Being off 10-15 lbs. can be a big difference in clamping force when torqueing these.
 

Bnks334

Corporal
Dec 1, 2016
214
New York
I'll go off your torque specs, this is what I was looking for. Someone who has done these before in the same situation. Being off 10-15 lbs. can be a big difference in clamping force when torqueing these.
Attached was molnars specs for their rods and arp 2000
 

Attachments

Last edited:

JuniorB

Corporal
May 9, 2017
238
Rhode Island
I can see how doing this can be a big issue. I ended up doing then tonight, and to my suprise, when I opened up the package, it stated 36ft lbs, lol! I torqued them to 53ft lbs, a tad under your stretch point, but over the 43 that has been mentioned. The crank moved very freely. I did find some interesting findings, but I'll post then in another tread.
 

Hydra Performance

Corporal
Platinum Vendor
Jan 31, 2017
181
Hi Omar, impressive work. Will you be supplying 2" aluminium outlets?

No idea why I did not see this sooner. I designed my outlets from 500F-rated silicone, reinforced with 5-plies. and a 1.75" ID for ease of fitment (with zero performance penalty), and a nice merge section where both banks meet for minimal flow disturbance. Furthermore the compressor outlets are both far from any radiant heat sources, which is further minimized when my heatshield is installed. Last but not least, I specced a light "aluminum" color in place of the usual black, to minimize radiant heat absorption even further. Again, attention to detail... :)
I know I've been saying this for a while but the initial batch should be done any day now!
 
Last edited:

gmx

Lurker
Dec 8, 2017
16
The M3/1M steering feels better than the electrical M2/M3/M4 steering anyway
Exactly, I would swap in a S55 before doing any turbos, dealing with fueling restrictions etc. But only if I get to keep my rack!
 
Jul 3, 2018
331
Excuse my language but "fuck, that's cool" is the only accurate descriptor in my opinion.

While clearly awesome for multiple reasons, I think one of my favorite most underrated parts is that you're keeping the DI Piezo injectors - especially cause that's gonna make a lot of the FB group people mad :tearsofjoy:
 

doublespaces

Administrator
Oct 18, 2016
6,761
AZ
GRR I'm mad. By the way, injectors cost as much as a stand alone. Food for thought.
 

Hydra Performance

Corporal
Platinum Vendor
Jan 31, 2017
181
@doublespaces,
Do not underestimate the time, effort, and expense needed to properly calibrate a standalone from scratch, and even then its never going to be factory perfect - and this is coming straight from a professional tuner...
 

jyamona

Lieutenant
Free Vendor
Nov 7, 2016
770
Philly
@doublespaces,
Do not underestimate the time, effort, and expense needed to properly calibrate a standalone from scratch, and even then its never going to be factory perfect - and this is coming straight from a professional tuner...
x1000. Everyone always seems to really overlook this. See how much that standalone costs after you have to pay for 60+ hours of your tuners time, and it still not be done or run great in all conditions.
 

Similar threads

Top