John all I have really tried to do with my build and the on going data collection is give us CIS guys some options that show good performance gains and that can be had either a little at a time or for less than a professional 3.6 transplant costs.
The 3.2 Motronic cars are even a cheaper candidate for performance upgrades than CIS.
I think eveyrone agrees "there is no replacement for displacement". But seeing the numbers and pretty pictures helps those educationally challenged like myself
But that said you have to
see comparisons to carbs, Megaquirt and Motec and other combinations to make good decisions. Thiose are most often 3.2s to date. If I had thought I failed in my 3.4 I would have already had a Varioram 3.6 put in.
Driving along side turbos and lwt 3.6s tells me I am still at the party and I want to share the info I collect. Be interetsing to see Ralph's 3.5 numbers when he gets it off the dyno.
Sorry John no complete graphs...
Here is the written material I have gathered:
From Randy Jones' Iris,
"46mm PMO, carbed 3.2 short stroke. with dual plugs, Iris:
281 H.P./ 244 ft./lbs. torque at the flywheel at 6700 RPM's.
(27% hp and 21.5% torque loss by these figures)
Changed muffler and put her on the DynoJet to rejet the carbs and this is what we received. S-CAR-GO Racing dual in/out stainless steel muffler change and we received
222.1 HP and 201.5 ft/lbs. torque measured at the rear wheels at 6500 RPM's"
From Randy Wells,
"911 with US 3.2L stock longblock that has been balanced and fitted with adapted 993 Varioram, MAF. K&N, Magnecore, 951 injectors, SSI, Sport muffler - all controlled by MoTec CD and Fuel management and mated to a early mag 7:31 915 box.
The difference between using the stock
extrude-honed 3.2 manifold and the Varioram was immediately apparent to Chris and I on our first test run. There is much more push from 3500 rpm on up and the engine wants to keep going at 6K. Chris Powell has dyno sheets on my engine and can share them with you. Basically, this is what we found: the Varioram did not change peak HP (214) at the wheels (actually went down 2 HP), but peak torque went from 193 to 203. All these figures are with Triad muffler and street gas. Flowmaster and race gas gives 5 more HP. The biggest difference was a 15 HP and 20 ft/lb increase with the Varioram beween 3300 and 4000 rpm and 20 HP and 25 ft/lb increase at 4500 rpm. By 5000 rpm the difference was down to 5. Peak HP occured at 500 rpm higher with Varioram and did not fall off as quickly (it was still 200 at 7000 rpm)."
215hp and 203# at the rear wheels. 220/203 with the Flowmaster and race gas.
DB's CIS 3.4, 20/21 cam, SSIs and a 2/2 muffler.
Also on the same Dynojet last dyno with 92 octane chevron
223 rwhp @ 6100rpm
213 rwt @ 4100