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Old 01-24-2017, 06:05 PM   #1
B21F
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Default B5254T4 forged parts

How much power can the forged pistons and conrods of the R's B5254 handle? im wanting to boost power to 400-500
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Old 01-24-2017, 06:14 PM   #2
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Not that much. Pistons probably - rods...nope.
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Old 01-24-2017, 08:14 PM   #3
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Pistons are not forged. 400-500 is a very wide span with many additional support requirements beyond motor work. You can look at Kaplhenkes block guard or Darton sleeving as required for over 400AWHP
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Old 01-24-2017, 08:58 PM   #4
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Why wouldn't Volvo put forged pistons in a high compression turbo engine? 300bhp is a a considerable amount of power
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Old 01-24-2017, 09:12 PM   #5
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Why wouldn't Volvo put forged pistons in a high compression turbo engine? 300bhp is a a considerable amount of power
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Old 01-24-2017, 11:14 PM   #6
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Why wouldn't Volvo put forged pistons in a high compression turbo engine? 300bhp is a a considerable amount of power
For any number of reasons, not the least of which is for DD, cast pistons have tighter bore clearances, reducing potential for premature wear due to lack of operator attention.
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Old 01-25-2017, 12:11 PM   #7
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400 wheel is doable with stock rods and pistons w/ a block guard.
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Old 01-25-2017, 12:19 PM   #8
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Why wouldn't Volvo put forged pistons in a high compression turbo engine? 300bhp is a a considerable amount of power
Because it's not a race car and designed to last several hundred thousand miles.
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Old 01-25-2017, 12:34 PM   #9
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Because it's not a race car and designed to last several hundred thousand miles.
The B21ET and B230ET had forged pistons and they arent a race car, and also last forever with proper care
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Old 01-25-2017, 01:18 PM   #10
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We made this shim design. You have to shim the block to prevent it from cracking.





Last edited by Generation Volvo; 01-28-2017 at 01:08 PM..
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Old 01-25-2017, 01:28 PM   #11
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The B21ET and B230ET had forged pistons and they arent a race car, and also last forever with proper care
30 years of metallurgy make a big difference. Just because something is forged doesn't make it stronger. It has already been stated, the blocks flex causing the issue. The pistons can still survive.
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Old 01-25-2017, 09:43 PM   #12
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So are you building two different engines?
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Old 01-25-2017, 09:51 PM   #13
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Quote:
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The B21ET and B230ET had forged pistons and they arent a race car, and also last forever with proper care
I would not bet much money on either of those..
jus sayin'
In like decades I have seen a couple of B23ET with forged pistons...Nice forged Mahle.
They were in core motors i bought just to have something to build..
They did look nice but HEAVY!

And those M rods HEAVY!
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Old 01-25-2017, 09:51 PM   #14
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Quote:
Originally Posted by mopar318 View Post
30 years of metallurgy make a big difference. Just because something is forged doesn't make it stronger. It has already been stated, the blocks flex causing the issue. The pistons can still survive.
Tell us about the difference it makes..

And tell us why forged parts are used.
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Old 01-25-2017, 09:53 PM   #15
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Originally Posted by Generation Volvo View Post
We made this shim Design. You habe to shim sie block to prevent the block from cracking.
Yeah, we all know about that. I made over 450AWHP with just shims on my RNC B5234T block, broke the Wiseco's due to tuning issues. I would still go with a block guard if i were thinking over 400wheel on a B5244Tx or B5254Tx block
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Old 01-26-2017, 11:49 AM   #16
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They did look nice but HEAVY!

And those M rods HEAVY!
fjord tough.
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