Re: Keith Black Hyper Pistons In a 426 Hemi
[Re: Snoopy]
#813175
09/24/10 04:43 AM
09/24/10 04:43 AM
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Joined: Feb 2007
Posts: 2,315
MOPAR HEADQUARTERS IN ALDEN NY
hemigod426
top fuel
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top fuel
Joined: Feb 2007
Posts: 2,315
MOPAR HEADQUARTERS IN ALDEN NY
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the 211 is higher comp than the 210, with block sqaure decked and heads cleaned up 3-5 thou you looking at more like 10.5 to1 with 38 thou gasket. which is ok for 93 and steel heads on hemi
MOPAR OR NO CAR
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Re: Keith Black Hyper Pistons In a 426 Hemi
[Re: Snoopy]
#813180
09/25/10 06:55 AM
09/25/10 06:55 AM
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Joined: Jan 2003
Posts: 6,392
nielsville, minn.
quickd100
master
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master
Joined: Jan 2003
Posts: 6,392
nielsville, minn.
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Quote:
I have had these pistons for many years and the rotating assembly has be balanced with these pistons. I would probably have to add Mallory metal to the crank if I go with forged pistons.
So if anyone has any real life experience with these pistons in a Hemi, I would like to hear from you. Pros and cons.
Hate to be anal but a good set of forged pistons aren't going to weigh any more than the 785g slugs you've already got. My custom JE's for a 4.50" bore came in at 805g without any lightening. Dave
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Re: Keith Black Hyper Pistons In a 426 Hemi
[Re: pacifica]
#813182
09/25/10 10:41 AM
09/25/10 10:41 AM
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Joined: Feb 2007
Posts: 2,578
sweden
1Fast340
master
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master
Joined: Feb 2007
Posts: 2,578
sweden
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Quote:
How will this motor be used? Per the chart you posted, cylinder wall clearance varies with intended use of the motor.
I used quality forged in my motor because it see's regular hard use and I agree with above post about why cut corners.
If the motor will see an easy life, then you may be ok with K/B parts.
"my motor will live an easy life" is usualy a very bad excuse wich often means noone will care about getting it tuned in just right,at some point someone will step on it and if the tune is lean or to much timing there will be broken pistons,wich may or may not ruin the block and or more.. may also happen from other fuelrelated isues. good pistons are a cheap insurance since they have a much better chance of survival
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Re: Keith Black Hyper Pistons In a 426 Hemi
[Re: Snoopy]
#813183
09/25/10 11:08 AM
09/25/10 11:08 AM
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Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo
EL Master
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EL Master
Joined: Jan 2003
Posts: 9,670
Lima, Peru
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Quote:
I have had these pistons for many years and the rotating assembly has be balanced with these pistons. I would probably have to add Mallory metal to the crank if I go with forged pistons.
So if anyone has any real life experience with these pistons in a Hemi, I would like to hear from you. Pros and cons.
Snoopy, KB Hypers are not bad pistons. Actually they are real good if you install em according to the specs.
I have a set of those on my 360 engine thats basically a stock rebuild with 10:1 compression and a little street cam.
On the other hand, on my HEMI I have Diamond Racing forged pistons.
Get my drift???
On a HEMI you dont want to cut corners on pistons....its an epensive HEMI, if something goes wrong it will be an expensive mistake and you will be banging your head against the wall. You dont want to cut corners on the shortblock.
If you put hypers on it will be something that will bug you always and will be on the back of your head everytime you want to floor that beast a little bit.
GOOD FORGED = PEACE OF MIND.
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Re: Keith Black Hyper Pistons In a 426 Hemi
[Re: DaytonaTurbo]
#813185
09/25/10 04:51 PM
09/25/10 04:51 PM
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Joined: Mar 2003
Posts: 8,850
Central Coast, Calif.
Snoopy
OP
master
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OP
master
Joined: Mar 2003
Posts: 8,850
Central Coast, Calif.
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Quote:
Also, has a machinist checked out your block to find out if it'll cleanup for your .005 oversize pistons..?
The block has already been honed with plates to the dimensions stated in my clearance chart.
The pistons weigh 781G without pins and keepers. 947G with pins and keepers.
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Re: Keith Black Hyper Pistons In a 426 Hemi
[Re: Snoopy]
#813186
09/25/10 05:53 PM
09/25/10 05:53 PM
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Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo
EL Master
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EL Master
Joined: Jan 2003
Posts: 9,670
Lima, Peru
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Quote:
Quote:
Also, has a machinist checked out your block to find out if it'll cleanup for your .005 oversize pistons..?
The block has already been honed with plates to the dimensions stated in my clearance chart.
The pistons weigh 781G without pins and keepers. 947G with pins and keepers.
Snoopy, like I said KBs are good....but given they are going in a HEMI I guess the price difference shouldnt hurt that much. Look for deals on building that HEMI for some less coin elsewhere really. For instance, use the stock rockers, you dont need that roller stuff.....stuff like that you can always upgrade later on....
Once you build the shortblock its there for good.
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Re: Keith Black Hyper Pistons In a 426 Hemi
[Re: Snoopy]
#813189
09/27/10 11:11 AM
09/27/10 11:11 AM
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Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo
EL Master
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EL Master
Joined: Jan 2003
Posts: 9,670
Lima, Peru
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Quote:
Are there any member/dealers that sell Diamond or JE pistons?
Chuck at Best Machine can help you out choose a set of Diamonds. Tell him I sent you.
Like I said you will probably be fine if you go with the KBs, I have used them myself in some engines with ZERO problems. However, I would not build a hemi with them. I mean, its a HEMI. Its a race engine that somehow ended up on street cars...race engines must have forged pistons!!!
Its like having a Ferrari and putting budget Korean tires on. Yes, I guess it wont harm it and it will drive pretty much OK....but it just isnt right!!!
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