Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside*
 

There is a lot more to the SH engine then many of us thought. Unless you have actually attempted changing an SH to a base then sit down and read as I go over the differences I noticed.


Obviously the largest difference is the lack of ATTS on the Base block. For those of you that do not know what the ATTS unit looks like here it is. ATTS is an electronically controlled differential utilizing a double clutch method. The ATTS unit uses ATF and can withstand apx 250 whp before the clutches begin to slip.

Notice the differences.

https://img.photobucket.com/albums/v34/shakes/ATTS1.jpg

https://img.photobucket.com/albums/v34/shakes/ATTS2.jpg

https://img.photobucket.com/albums/v34/shakes/ATTS3.jpg

Now I would like to show the differences between the BASE and SH blocks. To start with here is a picture of the Base block.

https://img.photobucket.com/albums/v...baseblock2.jpg

Compare that to the block of the SH.

https://img.photobucket.com/albums/v...es/SHblock.jpg


The problems that I noticed were things such as the water pipe, the wiring harness, adapter plate locations, etc.

The wiring harness as far as I can tell now isn't too bad. The plastic covering had to come off and the tape had to be cut to allow more movement of sensor wires, but other then that its not too bad.

The water pipe is completely different. The hose from the SH will bolt onto the base and work, but its a VERY TIGHT fit. I would suggest switching water pipes if you can.

This isn't even getting into the internal differences, the interior differences, suspension, etc.

All in all, if you want to swap an SH for a base, be ready. Its a chore that's for sure.

As always, if you have more info please e-mail me and I will get it added / amended.

Special thanks go out to Mike for the base block pics and a MAJOR thanks to Eddie (PapaPark), Sam and Jussin for helping with the swap / driving to VA from NC to get my lame ass.

nice comparrison....learned something new tonight...

great write up... definately learned something new bout my sh

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

awesome write up dougy... now have a safe trip out to cali.

Re: (jscblulu)
 

i always thought it'd be sweet to replace those clutches with something tougher so you could build the engine and run like 200 all motor whp. That would be awesome in the corners. https://honda-tech.com/forums/images/smilies/emthup.gif to honda's best tested skid pad car of the 90s!

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreIudeSI &raquo;</TD></TR><TR><TD CLASS="quote">i always thought it'd be sweet to replace those clutches with something tougher so you could build the engine and run like 200 all motor whp. That would be awesome in the corners. to honda's best tested skid pad car of the 90s!</TD></TR></TABLE>

I assume you mean that ATTS clutches. And only 200whp? I thought you could, as stated here and in hundreds of other threads that state the atts threshold around 250WHP?

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (94Vtecluder)
 

I've learned so much in the last couple of days and what a way to learn.. an engine swap. https://honda-tech.com/forums/images/smilies/embeer.gif

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (@ries)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by @ries &raquo;</TD></TR><TR><TD CLASS="quote">awesome write up dougy... now have a safe trip out to cali.</TD></TR></TABLE>

thanks man! ill try my best https://honda-tech.com/forums/images/smilies/emwink.gif

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PapaPark &raquo;</TD></TR><TR><TD CLASS="quote">I've learned so much in the last couple of days and what a way to learn.. an engine swap. </TD></TR></TABLE>

today eddie learned how to get cheeseburgers https://honda-tech.com/forums/images...s/emsmilep.gif

couldnt have done it without you man!! https://honda-tech.com/forums/images/smilies/emthup.gif

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Shakes &raquo;</TD></TR><TR><TD CLASS="quote">
today eddie learned how to get cheeseburgers https://honda-tech.com/forums/images...s/emsmilep.gif

couldnt have done it without you man!! https://honda-tech.com/forums/images/smilies/emthup.gif </TD></TR></TABLE>

yeh... and learned that the Hardware stores in Va Beach are useless..

I mean.. they couldn't even find me a 10mm 1.25 pitch fine thread nut... https://honda-tech.com/forums/images...s/emsmilep.gif

Useless I tell you.. useless

Oh and the shop where we were.. they like to put salt on faces... weird huh.. LMAO!!!

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

nice post, see you learn something new every day, keep it up

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (prelittlelude)
 

Doug, great write up. https://honda-tech.com/forums/images/smilies/emthup.gif https://honda-tech.com/forums/images/smilies/emthup.gif

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (STicky Spec-C)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by STicky Spec-C &raquo;</TD></TR><TR><TD CLASS="quote">Doug, great write up. https://honda-tech.com/forums/images/smilies/emthup.gif https://honda-tech.com/forums/images/smilies/emthup.gif

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

thanks peter!

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

Isn't there a dowel or something on the bock that is different on the SH block?? Cause I've read about people swapping the non ATTS tranny onto the SH block, and they had to grind their block to get this piece off...

Maybe I'm crazy, but I thinkI've read it a few times around here

Great writeup, though, deserves a https://honda-tech.com/forums/images/smilies/emthup.gif

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

Woo Hoo!! Doug can swap an engine, but does he remember what pcv means?
Hope all goes well in NC, thanks Jussin and Sam for taking Doug off our hands. Just joking, have a safe trip man! Great experience today watching you work!

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

nice! added to faq

glad i could help https://honda-tech.com/forums/images/smilies/emwink.gif

Re: (Mykizism)
 

nice thanks for info

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

Why do you HAVE to put a base modle transmission. Why cant you just put the Half shaft into the Sh tranny?

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

Wont the half shaft splines fit into a Sh tranny because someone said the internals of the tranny itself are no differant, but I wouldnt think everyone would swap a base trans if they didnt have too.

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (h22vtecguy)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h22vtecguy &raquo;</TD></TR><TR><TD CLASS="quote">Why cant you just put the Half shaft into the Sh tranny?</TD></TR></TABLE>
'cause it won't fit.

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Daemione)
 

i want to know something that had to do with this, is there any way to change the Type SH manual tranny with lets say an accord manual tranny? is the ATTS only for the auto? i have never seen that straight up answered.

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (GZERO)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GZERO &raquo;</TD></TR><TR><TD CLASS="quote">i want to know something that had to do with this, is there any way to change the Type SH manual tranny with lets say an accord manual tranny? is the ATTS only for the auto? i have never seen that straight up answered.</TD></TR></TABLE>
yes you have to use a gheto adaport platethat mounts up to yourblock then mounts to the half shaft.

yes there are manual sh trannys
oh yea 2001 preludes came a h22a4 and its like a base block thats whats in my lude now https://honda-tech.com/forums/images...es/emsmile.gif

i like the idea of building an atts to work with more power...if the atts could work with more power it would beat the pants off an m2b4...im sure with a lotta cash the clutches inside could be made by a custom auto tranny race shop..then again anything can be made with the right amount of scrilla

Re: (CGags13)
 

SH transmissions ONLY come/came in Manual. There is no Auto ATTS trans.

Re: Type SH and Base comparison. Why the SH needs its own block code. *Pics Inside* (Shakes)
 

great right up.