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1989 Honda Civic Si USDM Restore

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Old 09-21-2015, 11:50 AM
  #676  
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Default Re: 1989 Honda Civic Si USDM Restore

I always wanted to do a Endyn single cam build! Cant wait to see what kind of numbers this thing puts down!
Old 09-21-2015, 05:29 PM
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Default Re: 1989 Honda Civic Si USDM Restore

Just when I thought it couldn't get better
Old 09-21-2015, 09:09 PM
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Default Re: 1989 Honda Civic Si USDM Restore

This will be awesome. Any power goals in mind? What intake manifold, throttle body and header are you going to run?
Old 09-22-2015, 11:30 AM
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Default Re: 1989 Honda Civic Si USDM Restore

Undecided on the exact Intake and throttle body. As far as the header goes I have two options. One is a Skunk2 Alpha Header and the other is a vintage Mugen ZC header to match the rest of the EF3 Mugen catback.
Old 09-24-2015, 06:59 PM
  #680  
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Default Re: 1989 Honda Civic Si USDM Restore

an EF3 header will bolt on to your head, but the ports are vertically out of alignment by around 3mm.
Old 09-24-2015, 07:57 PM
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Default Re: 1989 Honda Civic Si USDM Restore

I literally can't believe you got TOO to build you a head. I was jealous of this build from the start but this literally pushed me over the edge. lol.

Amazing build. Amazing sourcing skills. Amazing thread. Thanks for sharing with us.
Old 09-25-2015, 08:56 PM
  #682  
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Default Re: 1989 Honda Civic Si USDM Restore

Originally Posted by ~sp33~
an EF3 header will bolt on to your head, but the ports are vertically out of alignment by around 3mm.
Yes you are correct with ports being positioned different between the SOHC and the DOHC ZC. This header is actually compatible with both. I anticipated having to modify the Mugen header so I created a stencle of the exact port shape and size on my head and paired it up to the header to see what needed to be modified. Turns out the bottom port is an exact match and the rest of the ports match up OK with slightly more room on the header side (no blockage). I then compared the template to the Skunk2 header and the skunk2 is obviously bigger in every way which is not necessarily great. The header size is too big for even super hogged out ports IMO but it does have a 2.5" collector. Dyno will tell the difference between the two.
Old 12-19-2015, 10:24 AM
  #683  
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Default Re: 1989 Honda Civic Si USDM Restore

nice restore! CF-48?? Nice rims!
Old 12-19-2015, 10:43 AM
  #684  
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Default Re: 1989 Honda Civic Si USDM Restore

really feeling the Honda civic si
Old 01-04-2016, 03:13 PM
  #685  
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Default Re: 1989 Honda Civic Si USDM Restore

Car looks great and love the attention to detail and clean appearance. Makes me miss my first car, a white 89 hatch, albeit a DX.
Old 09-20-2016, 10:08 AM
  #686  
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Old 09-20-2016, 02:31 PM
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Default Re: 1989 Honda Civic Si USDM Restore

beautiful work.
Old 09-22-2016, 04:46 AM
  #688  
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Default Re: 1989 Honda Civic Si USDM Restore

Simply amazing!
Old 10-25-2016, 06:50 AM
  #689  
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Default Re: 1989 Honda Civic Si USDM Restore

Cool
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