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Old 10-26-2018, 03:47 PM   #76
Waddlz
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Been running these in my car for 22k miles. So far, no oil consumption and no issues.

New case halves. BBBB
Manley B-graded drop ins with total seal
Eagle H-beam rods
King bearings
OEM 2012 STi crank

Car is making ~500 whp on high boost, and ~420 on normal boost. E85 mostly.
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Old 07-31-2019, 01:00 PM   #77
pcampbell
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Has anyone had any luck putting graded forgers into a used block that has just been honed?
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Old 07-31-2019, 01:24 PM   #78
yamahaSHO
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04 S2000 EFR 7064

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I would not do that, they are noisy enough with a new block.
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Old 08-01-2019, 07:56 PM   #79
Rideit636
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They make a 99.55, but most used blocks should really go to 99.75 off you want a nice square bore and run tighter PTW. You'll see this once torque plates are installed.
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Old 08-01-2019, 11:51 PM   #80
motorbykemike
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Quote:
Originally Posted by Rideit636 View Post
They make a 99.55, but most used blocks should really go to 99.75 off you want a nice square bore and run tighter PTW. You'll see this once torque plates are installed.


that's pretty much it in a nutshell

Last edited by motorbykemike; 08-02-2019 at 08:22 AM.
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Old 08-02-2019, 01:34 PM   #81
nucci
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99.55 requires the bore to go from 3.9179 factory to 3.9192-3.9200 depending on desired piston to wall, they are NOT and could never be drop-ins.

Additionally they ship with 99.50 Total Seal rings which out of the box have first and second ring gaps in the .021-.026 range in the 3.9200 bore, which in my opinion is too loose for a non-race engine, and the oil rail gaps are huge if you care about those.

I just did this and I ended up getting them to work by buying a 99.75 set of the same rings and mix-n-matching to gap them to .018/.019 first and .025/.026 second.

Highly would not recommend, do drop-ins and wait to blow a head gasket or spin a rod bearing, or properly hone to 99.75 and buy those.
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Old 08-07-2019, 08:33 AM   #82
pcampbell
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We are talking about grade A and B drop ins. Pretty sure these are made specifically to drop in without boring?
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Old 08-07-2019, 11:32 AM   #83
nucci
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Quote:
Originally Posted by pcampbell View Post
We are talking about grade A and B drop ins. Pretty sure these are made specifically to drop in without boring?
Rideit636 brought up 99.55, and yes the rest of the thread is about the graded A/B pistons that fit stock bores.
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Old 08-09-2019, 12:33 AM   #84
Rideit636
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Quote:
Originally Posted by nucci View Post
99.55 requires the bore to go from 3.9179 factory to 3.9192-3.9200 depending on desired piston to wall, they are NOT and could never be drop-ins.

Additionally they ship with 99.50 Total Seal rings which out of the box have first and second ring gaps in the .021-.026 range in the 3.9200 bore, which in my opinion is too loose for a non-race engine, and the oil rail gaps are huge if you care about those.

I just did this and I ended up getting them to work by buying a 99.75 set of the same rings and mix-n-matching to gap them to .018/.019 first and .025/.026 second.

Highly would not recommend, do drop-ins and wait to blow a head gasket or spin a rod bearing, or properly hone to 99.75 and buy those.
Rewind. I never said they could be dropped in. I'm saying they are the smallest useable size on a seasoned case. They'll obviosuly require honing. But that's the point. You can't just seat new rings on a worn crosshatching. Drop-in's are for a new case. And yeah. Those gaps put of the box do suck. Your second ring is still on the loose side IMO.
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Old 12-02-2019, 11:42 AM   #85
pcampbell
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Does anyone else make A/B pistons?
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Old 06-01-2020, 10:22 PM   #86
flyboynextdoor
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Iíve been running these pistons for two years now.. no issues. They chatter a bit on start, but my block has a lot of miles on it. Havenít had it tuned since the rebuild. But it was dynoíd at 282whp and 295lbí at the wheels with 11psi. I donít regret getting these compared to getting the block machined for other pistons and still having cold start noise.. once they warm up itís quiet and runs great.
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Old 06-02-2020, 07:11 AM   #87
pcampbell
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Default Manley 99.50A and 99.50B Pistons

If IAG puts drop in pistons in, I am sure theyíre fine on a NEW block. They actually use JE I think.

Last edited by pcampbell; 06-02-2020 at 11:32 AM.
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