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| Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here. |
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#1
10-26-2009, 11:25 PM
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My belt driven turbo 406 runs
I have been playing with this little project for the last couple of months and finally overcame all the obstacles (to start it...) and fired her up today. OMG, it is loud through the mufflers...
This is as much of a experiment for the next motor as it is for a performance increase on this one. The short block is not exactly ideal being a 557 block with stock rods and heavy TRW pistons. Long story short, this motor was funded/started back in 1996 while I was in Bosnia. It does have head and main studs and ARP rod bolts. The cam is a less than ideal XE274, intake is a TKII, carb is a blow thru modified Holley 600HP. For ignition, I went back to my old mech adv Mallory and limited it to 12 crank degrees of advance (being cautious) and 8 degrees of initial. Jets are 73/82 with a 6.5PV. Heads are 96cc D-ports, pistons are .015 in the hole, head gaskets are .036 which added up to 8.3:1 compression. The turbo is a Thomas "Geoff" Knight belt driven. The drive ratio is 4.6:1. Bracketry is all homemade thanks to a Lowes and Advance Auto close by. It started right up. She wants more than 8 degrees, I took it briefly to 12 and currently have it set at 10. I definately need to bump up the fuel pressure, I left it at 8PSI from the regulator believing the boost refrence whould help. Pressure dropped down to 2-3 PSI so I will bump the pressure up 3-5PSI more.
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 Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#2
10-27-2009, 03:02 AM
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Interesting!
Keep the pictures coming Any more info on what blowthrough mods on the carb?
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Clay Marsh 1967 GTO convertible Twin Turbo 5spd project  http://forums.performanceyears.com/f...d.php?t=618281 http://www.youtube.com/watch?v=eJ9KworCMRE |
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#3
10-27-2009, 06:28 AM
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sweet
Thats pretty dang cool. Kudos on the "outside of the box" approach!
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434 CI TKO600RR 1969 Carousel Red RAII Heads...Pump gas 400+hp/450+tq at the wheels...life is good! 
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#4
10-27-2009, 07:39 AM
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Did 1/2" Stud help with the bracketry?
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Just a blind squirrel looking for a nut. |
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#5
10-27-2009, 07:44 AM
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Naw, not this time. You'd seen the A4 Clutch in there if I did. MY Science Project baby.
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#6
10-27-2009, 07:48 AM
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Quote:
 You're right, I should have known you weren't involved when he said he actually went to Lowes and Advanced Auto and spent $3...instead of using whatever was lying around the garage.
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Just a blind squirrel looking for a nut. |
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#7
10-27-2009, 10:22 AM
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Looks good John, good luck with it.
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Conrad 79 Trans AM 406 #12 heads Torker II intake Crower 60210 750 holley vac. sec. T400 3500 Stall 3:73:1 rear.  ECMTTFMFers. IHTTFMFers.
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#8
10-27-2009, 11:35 AM
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Looks awesome. Nice work.
Ya think that width serpenteen belt will keep up with the boost? What are you using as a tensioner? |
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#9
10-27-2009, 12:12 PM
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What's the purpose of the cable that is wrapped around the discharge of the blower?
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#10
10-27-2009, 12:18 PM
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Isn't a "belt driven" turbo a......blower?Oh,nevermind.
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#11
10-27-2009, 12:35 PM
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Johnny, that is a good lookin job you did there. Let me know how it works. I have admiration for your innovative approach my friend. Oh and-Illegitimi non carborundum. lol
Are you guys still working on the Vega Wagon project? I have 2 glass fenders I would give you for the Vega. You have to come and see us to get 'em though.
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fasteddy |
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#12
10-27-2009, 12:54 PM
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That 6 rib serpentine will probably slip when its in boost. You may want to look at a minimum 10 rib for moderate boost levels. Nice concept...keep the pictures and updates coming.
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#13
10-27-2009, 01:18 PM
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Quote:
 In addition to Scott's question about the stranded cable, how else is the unit fastened to the engine besides the one fastener going to the same bracket the stranded cable is mounted to?
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Just a blind squirrel looking for a nut. |
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#14
10-27-2009, 01:51 PM
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Quote:
Just an educated guess. To keep some of the vibration down with the long tube to the hat and couplers in between. I would also keep a close eye on your plugs (A/F ratios) and upping the boost with a non equal length dual plane intake. Last edited by PONTIAC DUDE; 10-27-2009 at 02:01 PM. |
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#15
10-27-2009, 02:19 PM
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A few more pics
Here are a few more pics as I was building this. The upper cable was to prevent or
reduce any forward twist/shift of the turbo. I "pressed" a tension pulley on one of the support brackets to take out some of the slop from the long belt. I slightly bent the tube when doing it, I will redo it here in the near future. I am looking for a a/c bracket to further support the bar off the head.
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Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac Last edited by Johnny406; 10-27-2009 at 02:50 PM. |
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#16
10-27-2009, 02:23 PM
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a few more pics
Here is a link of the build that I was doing on PZ for those interested. This has been a fun learning experience anld like me, something odd and different...
http://www.pontiaczone.com/forum/sho...ewpost&t=24885
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Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#17
10-27-2009, 02:24 PM
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The pulleys are 5mm metric
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Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#18
10-27-2009, 02:27 PM
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Quote:
http://www.pontiaczone.com/forum/showthread.php?t=24413
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Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#19
10-27-2009, 02:32 PM
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Quote:
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Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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#20
10-27-2009, 02:42 PM
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I will be in Boston on the 7th. :0( Maybe next time.
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fasteddy |
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