Alright, so I was looking at buying some Type S pistons, and was just planning on getting the standard size. A guy here on HT pm's me, says he has the pistons, rings, and wrist pins for close to the same price HMO sells them(but HMO does not include rings)...but his are the .25 OS pistons, my question, how much boring is require for these to fit? is a machines shop even going to be able to bore that much? or am I going to have to sleeve? The reason I wanted the type s pistons was to stay away from sleeving, but I am not sure.

 

The .25 OS Type S pistons are only 0.25mm oversized, or about 0.010". That's not a lot of material.

Find a shop that has experience with FRM honing, and you should be okay. Jim Justice, Endyn, and others can do it. I've had Endyn do one in the past, and he's doing two for me right now. Cost is much higher than a regular bore & hone job, so be prepared for that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">The .25 OS Type S pistons are only 0.25mm oversized, or about 0.010". That's not a lot of material.

Find a shop that has experience with FRM honing, and you should be okay. Jim Justice, Endyn, and others can do it. I've had Endyn do one in the past, and he's doing two for me right now. Cost is much higher than a regular bore & hone job, so be prepared for that.</TD></TR></TABLE>

is that due to the different process of honing an FRM block?

 

from what i have learned it is because the hone that is needed to do FRM runs at a much lower speed than a hone for iron bores. and having a hone that can go that slow is a more expensive machine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">The .25 OS Type S pistons are only 0.25mm oversized, or about 0.010". That's not a lot of material.

Find a shop that has experience with FRM honing, and you should be okay. Jim Justice, Endyn, and others can do it. I've had Endyn do one in the past, and he's doing two for me right now. Cost is much higher than a regular bore & hone job, so be prepared for that.</TD></TR></TABLE>

how much?

I was hoping to find someone local in the Nashville Area...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">from what i have learned it is because the hone that is needed to do FRM runs at a much lower speed than a hone for iron bores. and having a hone that can go that slow is a more expensive machine.</TD></TR></TABLE>

that seems logical...

lower RPM's = slower process = more labor hours = more $$$

 

Not only that, but the one shop a friend had do an H22 block, that had not done one before, said that they ran through a complete set of stones before they got everything to his specifications. They followed the Helms procedure to the letter and even called Sunnen to get further advice. According to them, it does take longer, as the stones have to be cleaned a lot more often.

 

How much is alot ?

 

Most quotes I've received for a bore and hone on an FRM block have been around $350 to $450.

 

iron ftw

 

That would be wonderful if the class rules allowed it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">Most quotes I've received for a bore and hone on an FRM block have been around $350 to $450.</TD></TR></TABLE>

damn! I can get my block sleeved for about $400-500 here

 

Sleeved? As in full sleeves or Darton replacement liners? Darton replacement liners do run about $500 installed from the prices I've been quoted.

I can't use sleeves due to class rules, and neither can the other car I'm building an engine for, so sleeving or replacement liners were out of the question for us.

 

I would most certainly retain frm for its low friction and heat transfer properties. Type-S, Mahle or Jun pistons.

 

JUN doesnt need sleeve? Uhr....uhm....???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by madcatz &raquo;</TD></TR><TR><TD CLASS="quote">JUN doesnt need sleeve? Uhr....uhm....???</TD></TR></TABLE>


and cost more than sleeving a block! lol

 

Jun is expensive, but their products never fail to produce excellent results.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">Sleeved? As in full sleeves or Darton replacement liners? Darton replacement liners do run about $500 installed from the prices I've been quoted.

I can't use sleeves due to class rules, and neither can the other car I'm building an engine for, so sleeving or replacement liners were out of the question for us.</TD></TR></TABLE>

guy said full Darton sleeves, USA Machine shop of Nashville, TN

 

FYI from my research: Darton only makes two types of sleeves for Hondas that I know of (other than custom sleeves made for Bensons, et al), the MID sleeves and the replacement liners. The MID sleeves run a bit over $500 just for the sleeves, so I really doubt they're selling MID sleeves with installation for $500. I'd bet it was the replacement liners.

Unless they're getting something custom from Darton, and then, I really would expect it to be more expensive.

Or did Darton release a new product??

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by egcoupe94 &raquo;</TD></TR><TR><TD CLASS="quote">
guy said full Darton sleeves, USA Machine shop of Nashville, TN</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 117 &raquo;</TD></TR><TR><TD CLASS="quote">FYI from my research: Darton only makes two types of sleeves for Hondas that I know of (other than custom sleeves made for Bensons, et al), the MID sleeves and the replacement liners. The MID sleeves run a bit over $500 just for the sleeves, so I really doubt they're selling MID sleeves with installation for $500. I'd bet it was the replacement liners.

Unless they're getting something custom from Darton, and then, I really would expect it to be more expensive.

Or did Darton release a new product??

</TD></TR></TABLE>

honestly, I have no clue. I will find out mpore info when it comes time for me to take my block to him to have him inspect it...