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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > N26 Forged internals Engine build
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      09-19-2020, 09:58 AM   #1
Kel918
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N26 Forged internals Engine build

Just starting my engine build. I'm going to go with Maxspeedingrods connecting rods, cp pistons, and dry cast iron sleeves with support rings for the open deck from cylinder supports system. Just got my connecting rods from maxspeedingrods. Shipping was extremely quick. Next up is ordering the cp pistons
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Last edited by Kel918; 09-20-2020 at 07:57 PM..
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      09-19-2020, 05:56 PM   #2
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Sweet. Looking forward to seeing your build as it progresses.

If it interests you, join us here:

https://www.facebook.com/groups/2443...651/?ref=share
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      09-19-2020, 08:40 PM   #3
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About to start the same process as you !
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      09-20-2020, 08:01 PM   #4
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Originally Posted by sspade View Post
Sweet. Looking forward to seeing your build as it progresses.

If it interests you, join us here:

https://www.facebook.com/groups/2443...651/?ref=share
Thanks, aiming for 600-650whp using a twin charge setup
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      09-20-2020, 08:02 PM   #5
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About to start the same process as you !
Let's go!! hopefully everything goes smooth
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      09-30-2020, 04:02 PM   #6
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Would you mind measuring those rods center to center? They look like Eagle M5x rods.


Yep so, the rods pictured above are 135mm length c to c. Would need wrist pin and crank diameter but if that's the case, M50 based (m50, m52, s50, s52) rods will work - in which case I would go with Molnar rods personally.
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      10-07-2020, 06:36 PM   #7
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Originally Posted by 5mall5nail5 View Post
Would you mind measuring those rods center to center? They look like Eagle M5x rods.


Yep so, the rods pictured above are 135mm length c to c. Would need wrist pin and crank diameter but if that's the case, M50 based (m50, m52, s50, s52) rods will work - in which case I would go with Molnar rods personally.
hey just saw this, on their website it says center to center length is 144.3mm . I actually called eagle rods and they didn't have any rods that would work before I went with maxpeedingrods.

here's the maxpeedingrods link for the rods : https://www.maxpeedingrods.co.uk/pro...(us-only).html

Here are the n20 specs from hurricanre rods and it's 144.35mm center to center : https://www.hurricanerods.com/produc...l#.X35RTajYrnE

Last edited by Kel918; 10-13-2020 at 06:22 AM..
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      10-07-2020, 07:46 PM   #8
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Quote:
Originally Posted by Kel918 View Post
Just starting my engine build. I'm going to go with Maxspeedingrods connecting rods, cp pistons, and dry cast iron sleeves with support rings for the open deck from cylinder supports system. Just got my connecting rods from maxspeedingrods. Shipping was extremely quick. Next up is ordering the cp pistons
What is the purpose of this? Does this increase power ? What does it mean to “build and engine”
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      10-07-2020, 07:54 PM   #9
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Originally Posted by snipagang View Post
What is the purpose of this? Does this increase power ? What does it mean to “build and engine”
lets you run higher boost without blowing your internals. build can be just bolt ons (hell even rims + tune is considered "build" these days) but forged internals engine build is going big turbo + custom internals so your engine doesn't explode
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      10-07-2020, 08:36 PM   #10
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What is the purpose of this? Does this increase power ? What does it mean to “build and engine”
The reason why I have to rebuild the engine with stronger forged connecting rods and pistons is because the engine will basically self destruct from what I've read with anything around 325-350 whp. I'm going for around 5-600 whp with my set up.

Last edited by Kel918; 10-13-2020 at 06:23 AM..
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      10-07-2020, 08:37 PM   #11
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lets you run higher boost without blowing your internals. build can be just bolt ons (hell even rims + tune is considered "build" these days) but forged internals engine build is going big turbo + custom internals so your engine doesn't explode
Thanks !! for the explanation
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      10-12-2020, 05:25 PM   #12
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Thanks !! for the explanation
Whats your budget if you don't mind me asking? I'm loving 300hp in this thing but 500 just sounds amazing especially if it can be done safely. And honestly, my car is paid in full and modded the way I want and its already worth almost worth nothing so.. fuck it?
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      10-12-2020, 08:24 PM   #13
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Whats your budget if you don't mind me asking? I'm loving 300hp in this thing but 500 just sounds amazing especially if it can be done safely. And honestly, my car is paid in full and modded the way I want and its already worth almost worth nothing so.. fuck it?
I really didn't have a budget planned just trying to get good parts for as low as possible. I paid $658 for the rods shipped, and just got the pistons with the upgraded rings shipped for $905. With the twin charge setup I have planned, it should put a minimal amount of strain on the engine.
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      10-12-2020, 08:36 PM   #14
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Just got my pistons from Carillo !!
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      10-12-2020, 10:12 PM   #15
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excited to see this build happen! who is making your sleves?
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      10-12-2020, 10:25 PM   #16
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I plan on getting the Iron sleeves, cylinder support rings, and everything installed at cylinder support system. I have to find an engine block now because they're backed up about 8 weeks and I can't have the car parked that long.
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      10-12-2020, 10:50 PM   #17
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when you say sleeves, you mean OEM or is it an aftermarket solution aka Darton, APS, etc.
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      10-13-2020, 03:19 AM   #18
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On their website - www.cylindersupportsystem.com it says including iron liners . I forgot to ask specifically which brand. I'll call today later on and find out
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      10-14-2020, 08:30 AM   #19
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Originally Posted by sqwinny View Post
when you say sleeves, you mean OEM or is it an aftermarket solution aka Darton, APS, etc.
I spoke with cylinder support system and they use melling cast iron cylinder sleeves. I actually looked them up and those sleeves are going for like $22 each.
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      10-15-2020, 01:47 PM   #20
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Quote:
Originally Posted by Kel918 View Post
Quote:
Originally Posted by sqwinny View Post
when you say sleeves, you mean OEM or is it an aftermarket solution aka Darton, APS, etc.
I spoke with cylinder support system and they use melling cast iron cylinder sleeves. I actually looked them up and those sleeves are going for like $22 each.
Taking it to a machine shop to bore out the cylinder and put in the sleeves?
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      10-15-2020, 02:35 PM   #21
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I'm going to send it to cylinder support system, for $1,245 on their website they install support rings, the iron liners and machine everything to the block.

Last edited by Kel918; 10-16-2020 at 11:02 AM..
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      10-15-2020, 02:37 PM   #22
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it's going to get everything else done with them so it's going to be more money. I'm just trying to find a block with a good crankshaft. They told me they’re real busy and I would be looking at an 8 week turn around

Last edited by Kel918; 10-16-2020 at 11:05 AM..
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