Aside from the cache, why a six over a four with same h.p.? Smoothness?, 1970-1976 914-4, 914-6 Options

[unpolire]

I have never driven a stock original 2.0 914-6. I have driven properly converted 914s with 2.7/3.0 transplants and my own stock 1.7Ls. Aside from the cache of a six in back, if you can have 200-250 h.p. from a four, why convert to a six? Is there a noticeable difference in torque and smoothness over a properly modified four? Can you feel it on the road? A serious question seeking the definitive answer that could save $10-20K later. Let's hear from both camps, pluses and minuses.

[Tom_T]

All good points, but if you're comparing a stock 2L 6 with 110 HP - to a milder 2056-2270 4 with 110-165 HP - then you'll save about 270 lbs. in wt. over the 6, plus quite a bit in the wallet! (IMG:style_emoticons/default/piratenanner.gif)

PS - IIRC the 2L stock 6 was only about 110-125 ft/lb TQ & the 6's TQ doesn't come in until pretty high in the revs., whereas the stock 2.0 4 had about the same TQ much earlier & with a flat plateau TQ curve all the way to redline pretty much at max., which is why the 73-74 2.0 GA's were a decent replacement for the 2L-6 ..... and the TQ curves that I'd seen on the Raby site for the 2056 & 2270 had the same early/flat with 140-180 ft/lb TQ IIRC - so the milder 4's have much better TQ than the stock -6!

If you're talking a conversion-6 with a later air or water boxer 6, then that's a whole different ballgame & price range - and the individual's preference.

PSS - Another built-4 option is FAT Performance here in Orange CA - especially if you're in CA or the west, since Raby is in GA back east. Google their website for T-IV motors. Ron the owner there can build you an engine to whatever you want (IIRC he does aircooled 6's too), & he's a super nice guy who will walk you thru his shop personally & spend time with you, which is nolonger an option with Raby due to their "insurance concerns" last I heard.

[gothspeed]

All good points, but if you're comparing a stock 2L 6 with 110 HP - to a milder 2056-2270 4 with 110-165 HP - then you'll save about 270 lbs. in wt. over the 6, plus quite a bit in the wallet! (IMG:style_emoticons/default/piratenanner.gif)

PS - IIRC the 2L stock 6 was only about 110-125 ft/lb TQ & the 6's TQ doesn't come in until pretty high in the revs., whereas the stock 2.0 4 had about the same TQ much earlier & with a flat plateau TQ curve all the way to redline pretty much at max., which is why the 73-74 2.0 GA's were a decent replacement for the 2L-6 ..... and the TQ curves that I'd seen on the Raby site for the 2056 & 2270 had the same early/flat with 140-180 ft/lb TQ IIRC - so the milder 4's have much better TQ than the stock -6!

If you're talking a conversion-6 with a later air or water boxer 6, then that's a whole different ballgame & price range - and the individual's preference.

PSS - Another built-4 option is FAT Performance here in Orange CA - especially if you're in CA or the west, since Raby is in GA back east. Google their website for T-IV motors. Ron the owner there can build you an engine to whatever you want (IIRC he does aircooled 6's too), & he's a super nice guy who will walk you thru his shop personally & spend time with you, which is nolonger an option with Raby due to their "insurance concerns" last I heard.

(IMG:style_emoticons/default/agree.gif) ............ that was my logic during powerplant considerations ........... I decided on a semi modded 2056cc .......... I am expecting between 130-150 HP which should be plenty for a GT clone/replica ..... anything more than that would be icing on the cake!! (IMG:style_emoticons/default/smile.gif)

I further chose the 4 because of the simplicity and weight .......... and for extra cooling I will be running an oil filter 'sandwich' adapter with the extra cooler in the wheel well ............. it is currently twin carbed with 44 IDF Webers, Web #270 Camshaft, ported heads w/ 44IN &38 EX valves, counter weighted crank and H-Beam rods/ARP bolts .......... runs and sounds very nice ....... on the engine dyno so far ....... still need to finish the car though ....... (IMG:style_emoticons/default/wink.gif)