- Mon Nov 10, 2008 9:40 am
#78070
Ok, so i hear more and more about these sleeves and how they dont handle boost well, can anyone elaborate?
- Tue Nov 11, 2008 9:36 am
#78246
from a little research the walls on the h22 are too thin and would crack under pressure thats were sleeves come in play
- Tue Nov 11, 2008 3:56 pm
#78261
The H22 Walls are also made from a Weaker material then The F22 or the H23. Which is why a H22A Head on a F22B or H23 Block is a Popular Frankenstein.
I don't remember the Exact name of it, But theirs just some coating instead of the steel sleeves in the F22 and H23.
I don't remember the Exact name of it, But theirs just some coating instead of the steel sleeves in the F22 and H23.
- Thu Nov 27, 2008 5:17 pm
#80631
the sleeves in a h22 frm sleeves
- Fri Nov 28, 2008 1:05 am
#80681
so will sleeving the block help? And what would be better sleeving the h22, or frankenstiening it by swapping an h23 block? and what would be cheaper?
- Fri Nov 28, 2008 2:34 am
#80693
FRM, it stands for Fiber Reinforced Metal. This basically means that the sleeve is not full ductile iron like the previous stronger sleeves of the Honda engine world.
This technology was introduced in 1988 with the introduction of the B21A1, which was included in the Prelude Si (JDM/EDM only).
FRM sleeves consist of a carbon fiber matrix, aluminum alloy, and aluminum oxide.
It is rumored that any type of power adder or forged piston in a engine used with the FRM sleeve will need to be re-sleeved, 95 percent of the people who have built an h22 with cracked sleeves will agree, the other 5 percent have never built a motor strong enough to crack the sleeve.
The following engines were created using FRM sleeves:
-B21A1
-H22A1
-H22A4
-H22A
-H23A
-F20C
-C32B(NSX)
------> ALL MOTOR <------
♫ d(-.-)b TRANCE d(-.-)b ♫
chrono404 wrote:The H22 Walls are also made from a Weaker material then The F22 or the H23. Which is why a H22A Head on a F22B or H23 Block is a Popular Frankenstein.
I don't remember the Exact name of it, But theirs just some coating instead of the steel sleeves in the F22 and H23.
FRM, it stands for Fiber Reinforced Metal. This basically means that the sleeve is not full ductile iron like the previous stronger sleeves of the Honda engine world.
This technology was introduced in 1988 with the introduction of the B21A1, which was included in the Prelude Si (JDM/EDM only).
FRM sleeves consist of a carbon fiber matrix, aluminum alloy, and aluminum oxide.
It is rumored that any type of power adder or forged piston in a engine used with the FRM sleeve will need to be re-sleeved, 95 percent of the people who have built an h22 with cracked sleeves will agree, the other 5 percent have never built a motor strong enough to crack the sleeve.
The following engines were created using FRM sleeves:
-B21A1
-H22A1
-H22A4
-H22A
-H23A
-F20C
-C32B(NSX)
------> ALL MOTOR <------
♫ d(-.-)b TRANCE d(-.-)b ♫
- Fri Nov 28, 2008 2:47 am
#80695
It would be cheaper just to get a h23 block. But if you planning on making sum serious power like going boost later. I recommend sleeving. Its a bit pricey but it will save your motor.
BoRIcuA y QUE!
JDM3StageVTEC wrote:so will sleeving the block help? And what would be better sleeving the h22, or frankenstiening it by swapping an h23 block? and what would be cheaper?
It would be cheaper just to get a h23 block. But if you planning on making sum serious power like going boost later. I recommend sleeving. Its a bit pricey but it will save your motor.
BoRIcuA y QUE!