OHC-6 TECH Over Head Cam projects, questions and advice.

          
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  #301  
Old 12-29-2017, 09:37 AM
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I love it. You're like the national debt, there's just no stopping you.........

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  #302  
Old 12-29-2017, 12:36 PM
Bzltyr1 Bzltyr1 is offline
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SilverBuick: I have that RAM AIR VI in a .cad and .ai format. You have seen it on my Turbo hat.

  #303  
Old 12-30-2017, 03:18 PM
Bzltyr1 Bzltyr1 is offline
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  #304  
Old 12-31-2017, 10:54 PM
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Thanks for the offer and reminder of what it looks like. I've passed it on to Nick but am still undecided. I'll let you know if we go with the Ram Air VI.

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The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #305  
Old 12-31-2017, 11:16 PM
Bzltyr1 Bzltyr1 is offline
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The .ai version can be stretch in any direction to fit any shape. The dfx is less adjustable.

  #306  
Old 01-06-2018, 11:19 PM
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My Summit Racing score of the day, a 4" turbo down pipe for $20. When I get the water pump relocated in front of the cross member it should fit nicely.

I've also wired up the 4L60e and Microsquirt transmission controller, and picked up two more "core" 4L60e's. These two are from the mid-2000's which is better than the 1993 model I'll be installing first. I'll pop the pan and tail shaft housing off of each and take a look. One I'm certain is a core return, the other is from a guy doing a junkyard LS swap so a decent chance the transmission serviceable and may even be clean inside.



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The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #307  
Old 01-09-2018, 06:33 PM
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The intake is getting some work! Going big!



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"How I learned to stop worrying and love the OHC Pontiac L6"



The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #308  
Old 01-14-2018, 07:33 AM
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What was the original application for that intake

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1931 Pontiac 5 window coupe OHC6 powered
2015 GMC Yukon SLT
  #309  
Old 01-15-2018, 10:34 AM
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A guy on the inliner.org forum cast six of these for Chevy 292 engines, but never did anything beyond the raw casting. So I bought one of the raw casting. The runners are thin for as much porting as I'm getting done, but for near stock ports they'd clean up fine.

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The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #310  
Old 01-16-2018, 03:56 AM
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How are you overcoming the deflection of that long/thin mill? A multitude of tiny (.003-.005") cuts?

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... or has a Pontiac born the same year as Jim Wangers? (1926}
  #311  
Old 01-21-2018, 04:39 PM
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I'm not the machinist so no sure. That's the head porter's tool. He gets plenty of work so I'm guessing he knows what he is doing.

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The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #312  
Old 01-23-2018, 07:12 PM
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Well Photobucket knocked $300 off their ransom demands and for $99/yr (>$9/mo) I paid them off to restore my photos across the web. Not a homerun win but at least not completely ridculous.

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"How I learned to stop worrying and love the OHC Pontiac L6"



The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #313  
Old 01-23-2018, 07:38 PM
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You should have had Trump negotiate for you...........

Sorry, not political.......just humor........or failed attempt at it

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  #314  
Old 01-30-2018, 10:18 PM
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More work on the intake. The plates have been welded to the runners to strengthen them. I shouldn't blow the welds on my manifold, lol. I've picked up a set of injectors from Fuel Injector Development that should easily supply my fueling needs. Then started to remove the cooling system and core support to begin the mounting of a 2nd Gen F-body aluminum radiator and intercooler. The plan is to get a 55 gpm Meizier remote water pump to replace the 21 gpm Craigs-Davies one I currently have. I've ordered an IO extender board (Input/Output) to get more sensor inputs to make the setup live comfortably just off the ragged edge. I'll be monitoring crankcase pressure, coolant system pressure, exhaust back pressure, pre-intercooler pressure and temperature and post intercooler pressure and temperature, as well as engine oil pressure and lash adjuster oil pressure.

The raw welds.


The welds cleaned up. The throttle body port and injector bosses and rail are next up.


A port shot.


I don't have an updated picture, but I'm about to pull a fender or two to remove the core support. I'm on the fence between getting a pre-made tubular one that still would need a bunch of work or just hacking up this core support that isn't in the best of shape anyways. Looks like someone has jacked the car up by the bottom of it.

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"How I learned to stop worrying and love the OHC Pontiac L6"



The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #315  
Old 02-01-2018, 04:31 PM
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Some goodies showed up yesterday. 6" SCAT rods and some forged Ross pistons to go on them. I plan on having some valve reliefs cut into the pistons to keep the engine non-interference. They are "thick" crowned for nitrous or boost use.





Then woke up this morning to see the throttle body side of the intake manifold has been worked on.

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"How I learned to stop worrying and love the OHC Pontiac L6"



The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #316  
Old 02-01-2018, 04:57 PM
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Ahhhhhhhhhhhhhhh car jewelry. I love it...........

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  #317  
Old 02-04-2018, 06:33 PM
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With the "new" 4" down pipe, I need to move the turbo forward some from where I had it mounted. Since I'm moving it forward I'm also going to move it away from the engine some. I've bought some box tubing to redo the support and make it stronger.

This is the old support mount.





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"How I learned to stop worrying and love the OHC Pontiac L6"



The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #318  
Old 02-11-2018, 12:47 PM
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More intake manifold work. Got the fuel rail mounted! Getting closer to being in my hands. Nick wants to do some more port clean up work since the plates have been welded on and a few other things to finish up.




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"How I learned to stop worrying and love the OHC Pontiac L6"



The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
  #319  
Old 02-11-2018, 01:18 PM
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Beautiful machine work...........keep the pics coming......

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  #320  
Old 03-02-2018, 01:38 PM
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No major updates. The Nick did a little finishing work on the ports to make sure the head runner was a smidge bigger than the intake runner, and doweled the head so the intake sits in the exact same location when mounting it up. He flowed the head with the whole intake assembly on it. It's a bit over 190cfm at the lift I am going to run, but picked up a bunch at low and mid lift. Approximately 30% off the seat, 20% at mid-lift and 10% more at max lift than a stock head.

Picked up a 55gpm water pump to replace the 22gpm one on the car. Also some turbo plumbing couplers to continue setting up the cold side plumbing.

Facebook video of the flow test.
https://www.facebook.com/smithbergra...yY&pnref=story

This is where the turbo lands with the new mount.



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"How I learned to stop worrying and love the OHC Pontiac L6"



The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)

1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
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