Ohisofly’s 91 Si project – 700hp or bust - Page 3 - Honda-Tech - Honda Forum Discussion

Go Back  Honda-Tech - Honda Forum Discussion > Honda and Acura Technical Forums > Forced Induction
Reload this Page >

Ohisofly’s 91 Si project – 700hp or bust

Ohisofly’s 91 Si project – 700hp or bust

 
Old 03-07-2019, 10:45 AM
  #51  
Honda-Tech Member
Thread Starter
 
ohisofly's Avatar
 
Join Date: Jan 2014
Location: York, PA
Posts: 50
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Originally Posted by DaX View Post
Bummer. I had to do mine twice too. The can of wrinkle paint definitely had enough to do 2 valve covers though, if using their prescribed method of 3 thick coats.
Yea I had enough to redo mine and probably enough to do another valve cover too. I’m pretty happy with how it came out overall

It’s been a little while but here’s what I’ve been up to

Measured the valve to valve clearances



Have plenty of room for adjustment



Had to file down a washer to get the degree wheel to fit properly



Installed bbs to lock vtec, used check valve springs, and bent a coat hanger to reference against the degree wheel. After putting the timing belt on and setting up the dial indicators I degreed the cams and measured piston to valve clearances







I've seen various figures on what's considered safe minimum p2v clearance but even going conservative with a minimum .100 or .080 still allows for plenty of room to play with cam adjustment. Degreeing them put it at -1, -1 which seems reasonable given the decked head & block



Then I started putting together the head, OEM valve seals



Supertech 85 lb springs, supertech steel retainers, blox lmas



Ferrea 6000 std valves and ferrea keepers



Head ready to bolt down



ARP headstuds



Bolted down



Delta 272 cams





Redoing the valve cover





Not perfect but it’ll do



New timing belt covers & gaskets











I accidentally got the wrong bottom cover so had to shave the bottom a little bit. It doesn’t sit flush against the oil pump at the bottom but close enough





Covers on







Started working on my transmission again, the youtube video I was following had the orientation of the 3/4 hub & slider upside down, causing everything on the mainshaft to be off a little bit. The case ultimately was maybe 2 or 3mm from closing



You can see the bearing at the top of the mainshaft isn't down the whole way





The hub & slider being upside down caused this needle bearing to be off, hence pushing up everything on the mainshaft





Took everything apart and cleaned it since it’s been sitting for maybe 6 months or so



All back together, replaced the 5th gear cuff mainshaft bearing as it was a little rough



I still need to find the c-clip that holds the countershaft to the case and the axle seals but it’s almost finished



Skunk2 70mm throttle body



Installed with a thermal gasket



Speedfactory 4bar map sensor



This is how it’s sitting right now



Currently waiting on new vtec solenoid gaskets and need to find the transmission seals that I have somewhere. Hopefully in the next few weeks I’ll be able to get the motor and trans dropped in so I can finish wiring the engine bay and start working on the turbo setup. Planning on a divided top mount manifold
ohisofly is offline  
Old 03-08-2019, 02:54 AM
  #52  
O.G. triple O.G.
 
NVturbo's Avatar
 
Join Date: Dec 2003
Location: CHARLOTTE
Posts: 4,672
Default Re: Ohisofly’s 91 Si project – 700hp or bust

awesome work, man. Always wanted a CRX but finding one in decent condition is nearly impossible.
NVturbo is offline  
Old 03-08-2019, 03:29 AM
  #53  
2x0
Honda-Tech Member
 
2x0's Avatar
 
Join Date: Oct 2011
Location: Rochester, MN
Posts: 1,725
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Lookin good! Subbed
2x0 is offline  
Old 03-08-2019, 04:02 AM
  #54  
Honda-Tech Member
 
Txdragon's Avatar
 
Join Date: Mar 2016
Posts: 1,544
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Looking good! I still cringe when I see a broke down transmission.
Txdragon is offline  
Old 03-08-2019, 06:32 AM
  #55  
Honda-Tech Member
 
LightningTeg's Avatar
 
Join Date: Nov 2007
Location: Indiana
Posts: 5,096
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Originally Posted by Txdragon View Post
Looking good! I still cringe when I see a broke down transmission.
Why? Its amazing how simple it is once you get it apart.
LightningTeg is offline  
Old 03-08-2019, 06:57 AM
  #56  
2x0
Honda-Tech Member
 
2x0's Avatar
 
Join Date: Oct 2011
Location: Rochester, MN
Posts: 1,725
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Originally Posted by LightningTeg View Post
Why? Its amazing how simple it is once you get it apart.

I'm sure, like many things, it's only scary the first time you do it.... I, too, have yet to crack one open. It's only a matter of time.
2x0 is offline  
Old 03-08-2019, 09:20 AM
  #57  
Honda-Tech Member
 
Txdragon's Avatar
 
Join Date: Mar 2016
Posts: 1,544
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Originally Posted by LightningTeg View Post
Why? Its amazing how simple it is once you get it apart.
<br /><br />
Originally Posted by 2x0 View Post
I'm sure, like many things, it's only scary the first time you do it.... I, too, have yet to crack one open. It's only a matter of time.
Txdragon is offline  
Old 03-08-2019, 09:22 AM
  #58  
Honda-Tech Member
 
Txdragon's Avatar
 
Join Date: Mar 2016
Posts: 1,544
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Originally Posted by LightningTeg View Post
Why? Its amazing how simple it is once you get it apart.
Originally Posted by 2x0 View Post
I'm sure, like many things, it's only scary the first time you do it.... I, too, have yet to crack one open. It's only a matter of time.
It could be. I am actually looking locally for a throw away transmission to use like a med student uses a cadaver.
Txdragon is offline  
Old 03-08-2019, 09:58 AM
  #59  
Honda-Tech Member
 
LightningTeg's Avatar
 
Join Date: Nov 2007
Location: Indiana
Posts: 5,096
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Jeff Evans has a 3 part video on you-tube on how to disassemble and reassemble B series trans
LightningTeg is offline  
Old 03-08-2019, 10:10 AM
  #60  
Honda-Tech Member
 
maxwellmercer's Avatar
 
Join Date: Sep 2008
Location: LoadedForBear,IL
Posts: 2,010
Default Re: Ohisofly’s 91 Si project – 700hp or bust

It's intimidating at first but, like others said, it's very simple once you get your feet wet. I personally lay every piece out in order as I take it out. Makes life a little easier! Its really cool once you get comfortable.
maxwellmercer is offline  
Old 03-08-2019, 11:35 AM
  #61  
Honda-Tech Member
Thread Starter
 
ohisofly's Avatar
 
Join Date: Jan 2014
Location: York, PA
Posts: 50
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Originally Posted by NVturbo View Post
awesome work, man. Always wanted a CRX but finding one in decent condition is nearly impossible.
Originally Posted by 2x0 View Post
Lookin good! Subbed
Originally Posted by Txdragon View Post
Looking good! I still cringe when I see a broke down transmission.
Thanks guys, I'm finally starting to make some good traction with this thing

This was the first transmission I've ever split the case on and it was definitely intimidating at first but it eventually starts making sense. The main negative for me was you won't find nearly as much info about rebuilding a b series tranny as a b series engine, so if you get stuck as in my case it can be a little tricky. Blown up diagrams of how everything stacks on the countershaft and mainshaft ended up being my best friend
ohisofly is offline  
Old 03-12-2019, 06:31 AM
  #62  
Honda-Tech Member
Thread Starter
 
ohisofly's Avatar
 
Join Date: Jan 2014
Location: York, PA
Posts: 50
Default Re: Ohisofly’s 91 Si project – 700hp or bust

I don't need this coolant port anymore



Welded it shut



Don't need this small one on the top either



Only the port nipple itself was steel, the rest is aluminum. Forgot to get an after picture but it doesn't look good. It's watertight though which is all that I really care about



Starting to look like an engine. Mocked up the fuel filter, fuel rail, fuel pressure regulator and injectors. Ended up ordering some fittings I'll need to complete the fuel lines but it's looking good overall





Ordered a new distributor clip because this one is toast



New vtec solenoid gaskets









I ordered new axle seals for the transmission, should be able to bolt together the case this weekend. Once that's finished just need to put on the twin disc and drop it in. I ordered a bunch of pipe for the turbo manifold which should be here next weekend as well
ohisofly is offline  
Old 03-12-2019, 07:02 AM
  #63  
Honda-Tech Member
 
LightningTeg's Avatar
 
Join Date: Nov 2007
Location: Indiana
Posts: 5,096
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Not crazy about the filter hanging off the fuel rail like that. Vibration and fuel fittings scare me lol
LightningTeg is offline  
Old 03-12-2019, 07:36 AM
  #64  
Honda-Tech Member
 
maxwellmercer's Avatar
 
Join Date: Sep 2008
Location: LoadedForBear,IL
Posts: 2,010
Default Re: Ohisofly’s 91 Si project – 700hp or bust

Originally Posted by LightningTeg View Post
Not crazy about the filter hanging off the fuel rail like that. Vibration and fuel fittings scare me lol
Agreed, aluminum fittings plus vibration is recipe for disaster. I had a buddy mount his FPR like that and let's just say it didn't end well.
maxwellmercer is offline  
 


Thread Tools
Search this Thread

Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: