GM Shows Off New V-6's, a V-12, and a 6-speed Automatic
10-21-2002, 07:49 PM
#11
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Originally posted by fastball
So GM is finnally using variable timming.
So GM is finnally using variable timming.
10-21-2002, 08:40 PM
#12
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Originally posted by kazi
I just found this out, but GM's inline6 in the Trailblazer mix and match does have VVT. GM will make a I4 and I5 variation of that engine.
I just found this out, but GM's inline6 in the Trailblazer mix and match does have VVT. GM will make a I4 and I5 variation of that engine.
10-22-2002, 06:10 PM
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GM does a lot of concept crap and get a lot of attention, but I seriously doubt we'll be seeing this in production anytime soon, if ever. Sorry, but their announcements and publicity carries no weight with me; I'll beleive it when I see it.
And if they do end up actually producing those engines, I feel sorry for whoever has to work on them. That belt setup looks like a PITA. And I don't even want to imagine how much you have to disassemble to change the spark plugs. Of course, being a GM engine, they could just put platinums in there and they'll out live the engine. :rofl:
And if they do end up actually producing those engines, I feel sorry for whoever has to work on them. That belt setup looks like a PITA. And I don't even want to imagine how much you have to disassemble to change the spark plugs. Of course, being a GM engine, they could just put platinums in there and they'll out live the engine. :rofl:
11-01-2002, 03:52 PM
#14
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The 1989 Caddillac Allante had variable valve timing. PITA belt setup? you've obviously never changed belts on a GM vehicle. It's beyond easy. Why would'nt you believe the motors are on the way? GM's already got plenty of effecient OHV engines, hell the Z06 iss classified as a low emissions vehicle
11-01-2002, 04:01 PM
#15
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Originally posted by 91 EX-R
The 1989 Caddillac Allante had variable valve timing.
The 1989 Caddillac Allante had variable valve timing.
11-01-2002, 05:05 PM
#16
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Originally posted by 91 EX-R
GM's already got plenty of effecient OHV engines, hell the Z06 iss classified as a low emissions vehicle
GM's already got plenty of effecient OHV engines, hell the Z06 iss classified as a low emissions vehicle
11-02-2002, 11:25 AM
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Originally posted by yianni64
I wonder how big the displacment of the 4cyl version will be. I mean its a good engine in its 4.2l inline 6 form, but if it kept the same bore and stroke itll be a 2.8L 4cyl and i dont see that happening.
I wonder how big the displacment of the 4cyl version will be. I mean its a good engine in its 4.2l inline 6 form, but if it kept the same bore and stroke itll be a 2.8L 4cyl and i dont see that happening.
11-02-2002, 12:49 PM
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Originally posted by MrFatBooty
The Porsche 944 S2 and 968 had a 3.0-liter inline four. Of course the cylinder dimensions were grossly oversquare in comparison to the GM inline six but that displacement in an inline four is most assuredly possible.
The Porsche 944 S2 and 968 had a 3.0-liter inline four. Of course the cylinder dimensions were grossly oversquare in comparison to the GM inline six but that displacement in an inline four is most assuredly possible.