Thread: unported speed #'s
10-31-2009, 09:43 AM #1
unported speed #'s
finally after being one year riding almost stock decided to do some work on it. here are my numbers.
70.5 d-plate, 800 grate, unmodded riva plate, pump seal kit
76.5 the above plus reinforced pump,efi, open throttle bodies, solas 14/20 piched, modded riva plate, vf3 reeds, oem milled head 160 psi 40,000 squish, @7140 ,87 degrees, 90 percent humidity
still have to seal all the bolts underneath, install leos wedge, keyway
thanx to everyone in the forum for their help
10-31-2009, 09:47 AM #2
Who opened your TBs and what did you do to the efi
10-31-2009, 09:50 AM #3
10-31-2009, 09:52 AM #4
11-02-2009, 06:59 PM #5
11-02-2009, 08:23 PM #6
GPRGASM's 05 went 76+ last year here in FL on the St Johns.
Unported, VF3s, milled head, pitched DF, beat up R&D rideplate, EFI controller and 1200 grate. GPS of course.
11-02-2009, 08:31 PM #7
(oem milled head 160 psi 40,000 squish,)
If you shave off all of the lip on the stock head, which is as far as you can go without getting into the squish band, you only have 145 psi on an unported motor, less on ported, and .055-.058 squish.
The only way you can get .040 squish is to deck the top of the cylinders .020 with the head being cut also.
Cutting all the lip off a riva head, without decking the cylinders still gives you .055-.058 squish, but compression is a little higher, and those numbers are with a one layer head gasket, add .009 to squish for standard double layer gasket.
11-02-2009, 08:40 PM #8
11-02-2009, 08:43 PM #9
- Join Date
- Oct 2006
autosport ran 77+ MPH on his unported EFI with mik72e piloting it.
thats the best i know of locally.
11-02-2009, 09:40 PM #10
- Join Date
- Apr 2006
- South MS
My '06 1300 unported went 77.8 on radar at 2006 mudbug in the heat.
GPR- Great speeds. Add the keyway and you should be around 7200rpms and 77mph+ and faster in the cooler air.
My Exact setup-
14/22 dynafly at 7200rpm
open throttle boddies
3 degree key
Riva heads at 160lbs and about .040 squish
1300 Modded Riva Plate at .950" angle
Stock tabs shimmed .110"
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