Strokin' it

[JRCivic]

Todd,

If your current bore size is 89mm (3.504"), then your displacement will be 2257cc.

At the time of my engine build, I chose 90mm simply because it was the only available ring size at the time... I am using rings made for the Acura Vigor. My current displacement is 2308cc. I battled the rod-ratio issue by creating a longer rod coupled with a special piston with the pin location moved up higher into the skirt... closer to the underside of the piston dome.

Using the stock sleeved block, Honda claims a bore service limit of 87.070mm. This means that in order to bore the block safely to either 88, 89 or even 90mm... you MUST re-sleeve the block using solid iron sleeves.

With a ductile iron sleeve job, I see no reason why this block should not handle all of the rigors handed down by the typical daily driven engine.

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'93 Civic Si H/B with B18C1, JRSC @ 8psi
Best 1320: 12.68 at 110 mph

[UberLude]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by JRCivic:
Todd,

If your current bore size is 89mm (3.504"), then your displacement will be 2257cc.

At the time of my engine build, I chose 90mm simply because it was the only available ring size at the time... I am using rings made for the Acura Vigor. My current displacement is 2308cc. I battled the rod-ratio issue by creating a longer rod coupled with a special piston with the pin location moved up higher into the skirt... closer to the underside of the piston dome.

Using the stock sleeved block, Honda claims a bore service limit of 87.070mm. This means that in order to bore the block safely to either 88, 89 or even 90mm... you MUST re-sleeve the block using solid iron sleeves.

With a ductile iron sleeve job, I see no reason why this block should not handle all of the rigors handed down by the typical daily driven engine.

<HR></BLOCKQUOTE>

JRCivic, what was your source for the rods and pistons. If you've gone this route, perhaps duplicating your work will save me some headaches? I was thinking about the endyn rollerwave pistons, which are being produced in a 90mm bore for the H22A. I would assume these have the pin in a good spot. As for the rods, I haven't crossed that bridge yet. Did you get them from Eagle or Crower?

Cheers,
Ben

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99 Prelude SH
--------------------
The world isn't run by weapons anymore, or energy, or money. It's run by little ones and zeros, little bits of data---it's all just electrons.

[UberLude]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by JRCivic:
Ben,

Crower did a custom set of rods for me in TITANIUM !!! The cost for the set of four rods was $3172.00. JE is responsible for the pistons, which are also custom manufactured... price was $1288.00 for the set including high retention rings. If you are interested in the rod-ratio geometry that I used in my set-up, I am certain that I can duplicate it in a steel rod for FAR LESS money.

Let me know if I can help.

Jim

<HR></BLOCKQUOTE>

Is having the rods in titanium really worth the extra $2+g's? I was thinking of getting titanium valves as part of a crower valvetrain (the Eibach valve springs and titanium retainers), so I can boost the revs up to 9k+.

I just don't want to pay 5x the money for 1.5x the performance. Ya'know?



------------------
99 Prelude SH
--------------------
The world isn't run by weapons anymore, or energy, or money. It's run by little ones and zeros, little bits of data---it's all just electrons.

[JRCivic]

Ben,

Crower did a custom set of rods for me in TITANIUM !!! The cost for the set of four rods was $3172.00. JE is responsible for the pistons, which are also custom manufactured... price was $1288.00 for the set including high retention rings. If you are interested in the rod-ratio geometry that I used in my set-up, I am certain that I can duplicate it in a steel rod for FAR LESS money.

Let me know if I can help.

Jim

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'93 Civic Si H/B with B18C1, JRSC @ 8psi
Best 1320: 12.68 at 110 mph

[JRCivic]

Ben,

Honestly, for a street car... I do not think that the Titanium Rods are worth the expenditure. At the time, reducing rotating mass was a huge concern: I lightened EVERY part in the shortblock. The gains on a street car are probably not worth the high cost of doing this.
I can build a custom set of Crower rods with the longer rod length for about 1/3 the price of the titanium ones... and they are almost as strong.


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'93 Civic Si H/B with B18C1, JRSC @ 8psi
Best 1320: 12.68 at 110 mph

[UberLude]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by JRCivic:
Ben,

Honestly, for a street car... I do not think that the Titanium Rods are worth the expenditure. At the time, reducing rotating mass was a huge concern: I lightened EVERY part in the shortblock. The gains on a street car are probably not worth the high cost of doing this.
I can build a custom set of Crower rods with the longer rod length for about 1/3 the price of the titanium ones... and they are almost as strong.


<HR></BLOCKQUOTE>

Longer rods, with the wrist pin on the pistons moved up to compensate. If you're spending that kinda dough, why not a custom crank instead, and more displacement?

------------------
99 Prelude SH
--------------------
The world isn't run by weapons anymore, or energy, or money. It's run by little ones and zeros, little bits of data---it's all just electrons.