Pls Advise - 2.2L Setup
Dec 12, 2015, 11:12 PM
#1
Evolved Member
Thread Starter
Pls Advise - 2.2L Setup
Hi Guys,
just wonder which pair is better for stroke ratio - 94mm crank + 156mm rods or 94mm crank + 150mm rods pair with Manley custom pistons?
Lastly, can I also get 2.2L with 88mm crank + 156mm rods pair with custom pistons?
Thanks
just wonder which pair is better for stroke ratio - 94mm crank + 156mm rods or 94mm crank + 150mm rods pair with Manley custom pistons?
Lastly, can I also get 2.2L with 88mm crank + 156mm rods pair with custom pistons?
Thanks
Last edited by jameswwt; Dec 13, 2015 at 09:29 AM.
Dec 13, 2015, 02:11 PM
#3
rod ratio change on these engines is highly over rated. a 6mm change would not be perceivable in any way. stock 2.0 is 1.7 and stock 2.4 is 1.5. both have been proven to work great.
that said rod choice for 2.2 should be made with piston choice. not recommended to make custom pistons. just not a good idea. there are plenty of shelf stock pictons for 94mm crank and 150mm rods.
the use a 147mm rod allows use of stock pistons made for 2.0. 153mm rod can be used with pistons made for 2.3 engines. problem here is compression goes up or down about .5 from what it supposed to be for 2.0 or 2.3
I am building a 2.2 right now and choose the 147mm rod length. using a 2.0 piston the comp goes up .5. this gave me the most piston coices to choose from.
that said rod choice for 2.2 should be made with piston choice. not recommended to make custom pistons. just not a good idea. there are plenty of shelf stock pictons for 94mm crank and 150mm rods.
the use a 147mm rod allows use of stock pistons made for 2.0. 153mm rod can be used with pistons made for 2.3 engines. problem here is compression goes up or down about .5 from what it supposed to be for 2.0 or 2.3
I am building a 2.2 right now and choose the 147mm rod length. using a 2.0 piston the comp goes up .5. this gave me the most piston coices to choose from.
Dec 13, 2015, 03:46 PM
#4
Evolved Member
Thread Starter
Thanks 94AWD & Evo 8.
Will you recommend if i go for 94mm crank pair with 150mm rods with Manley custom pistons? The reason is i tried to use back my BC I-beam rods.
My max rev is 8,500rpm
Will you recommend if i go for 94mm crank pair with 150mm rods with Manley custom pistons? The reason is i tried to use back my BC I-beam rods.
My max rev is 8,500rpm
Dec 13, 2015, 04:12 PM
#5
Evolved Member
rod ratio change on these engines is highly over rated. a 6mm change would not be perceivable in any way. stock 2.0 is 1.7 and stock 2.4 is 1.5. both have been proven to work great.
that said rod choice for 2.2 should be made with piston choice. not recommended to make custom pistons. just not a good idea. there are plenty of shelf stock pictons for 94mm crank and 150mm rods.
the use a 147mm rod allows use of stock pistons made for 2.0. 153mm rod can be used with pistons made for 2.3 engines. problem here is compression goes up or down about .5 from what it supposed to be for 2.0 or 2.3
I am building a 2.2 right now and choose the 147mm rod length. using a 2.0 piston the comp goes up .5. this gave me the most piston coices to choose from.
that said rod choice for 2.2 should be made with piston choice. not recommended to make custom pistons. just not a good idea. there are plenty of shelf stock pictons for 94mm crank and 150mm rods.
the use a 147mm rod allows use of stock pistons made for 2.0. 153mm rod can be used with pistons made for 2.3 engines. problem here is compression goes up or down about .5 from what it supposed to be for 2.0 or 2.3
I am building a 2.2 right now and choose the 147mm rod length. using a 2.0 piston the comp goes up .5. this gave me the most piston coices to choose from.
Since I was the one suggested the 153mm rod, I do not overrate anything, rod ratio on the 4g63/4g64 is what it is, and yes the 4g64 1,5:1 ratio might have worked fine but our aim here is to build something even better. Between the two combos he asked about I suggested the best one as getting the optimum rod ratio on a stroker has more impact than on a 2.0L. On the 2.0L the benefit of a long rod setup is almost unnecessary. Sure he can do 150mm rod/piston off the shelf combo, but there is absolutely nothing wrong with going either with 153mm rod or with custom pistons, many time attack teams use these combo with excellent results. There is a reason mitsubishi kept the rod ratio at 1.7:1. Reducing the rod length below 150mm increases the stress not only on the rod but on the whole rotating assembly, but also reduces greatly piston acceleration, especially at the upper part of the rev-band where a stroker suffers. As for compression, who said you cannot have custom higher or lower compression pistons with 153mm rod length? There are also other ways to slightly increase or reduce compression to make up for an off the shelf stroker piston with slightly lower compression. There are enough choices out there for 2.2L kits with 153mm rods, and already gave him a suggestion of a rod he can easily source out from the U.K as if I am not mistaken he is from the U.K.
Marios
Last edited by Evo8cy; Dec 13, 2015 at 04:21 PM. Reason: typo
Dec 13, 2015, 04:21 PM
#6
I've always liked the 94/150 setup, and it will do 8,500 without breaking a sweat. Manley and CP make pistons (a few others probably have a part number as well), I say go for it.
Dec 13, 2015, 04:33 PM
#7
Evolved Member
Thread Starter
You can't do a 2.2L on an 88mm crank, the block can't be bored out that far. Members here report piston ring issues on 94mm/156mm setups, so that's out. Your options here are 150mm and 153mm; the 153mm setup can use 2.3L pistons, but since you have 150mm rods already, it's settled.
I've always liked the 94/150 setup, and it will do 8,500 without breaking a sweat. Manley and CP make pistons (a few others probably have a part number as well), I say go for it.
I've always liked the 94/150 setup, and it will do 8,500 without breaking a sweat. Manley and CP make pistons (a few others probably have a part number as well), I say go for it.
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Dec 13, 2015, 04:34 PM
#8
Evolved Member
Thread Starter
Since I was the one suggested the 153mm rod, I do not overrate anything, rod ratio on the 4g63/4g64 is what it is, and yes the 4g64 1,5:1 ratio might have worked fine but our aim here is to build something even better. Between the two combos he asked about I suggested the best one as getting the optimum rod ratio on a stroker has more impact than on a 2.0L. On the 2.0L the benefit of a long rod setup is almost unnecessary. Sure he can do 150mm rod/piston off the shelf combo, but there is absolutely nothing wrong with going either with 153mm rod or with custom pistons, many time attack teams use these combo with excellent results. There is a reason mitsubishi kept the rod ratio at 1.7:1. Reducing the rod length below 150mm increases the stress not only on the rod but on the whole rotating assembly, but also reduces greatly piston acceleration, especially at the upper part of the rev-band where a stroker suffers. As for compression, who said you cannot have custom higher or lower compression pistons with 153mm rod length? There are also other ways to slightly increase or reduce compression to make up for an off the shelf stroker piston with slightly lower compression. There are enough choices out there for 2.2L kits with 153mm rods, and already gave him a suggestion of a rod he can easily source out from the U.K as if I am not mistaken he is from the U.K.
Marios
Marios
Dec 13, 2015, 04:38 PM
#10
Evolved Member
Whether you go with the 147mm, 150mm, or 153mm you will be fine, although the 153mm is the best option, but since you want to use your 150mm rods then yes manley pistons or cp ones would do fine, tomei, hks, and je if I am not mistaken.
Marios
Dec 13, 2015, 04:41 PM
#11
Evolved Member
Thread Starter
Dec 13, 2015, 04:42 PM
#12
Evolved Member
Dec 14, 2015, 01:45 AM
#15
Since I was the one suggested the 153mm rod, I do not overrate anything, rod ratio on the 4g63/4g64 is what it is, and yes the 4g64 1,5:1 ratio might have worked fine but our aim here is to build something even better. Between the two combos he asked about I suggested the best one as getting the optimum rod ratio on a stroker has more impact than on a 2.0L. On the 2.0L the benefit of a long rod setup is almost unnecessary. Sure he can do 150mm rod/piston off the shelf combo, but there is absolutely nothing wrong with going either with 153mm rod or with custom pistons, many time attack teams use these combo with excellent results. There is a reason mitsubishi kept the rod ratio at 1.7:1. Reducing the rod length below 150mm increases the stress not only on the rod but on the whole rotating assembly, but also reduces greatly piston acceleration, especially at the upper part of the rev-band where a stroker suffers. As for compression, who said you cannot have custom higher or lower compression pistons with 153mm rod length? There are also other ways to slightly increase or reduce compression to make up for an off the shelf stroker piston with slightly lower compression. There are enough choices out there for 2.2L kits with 153mm rods, and already gave him a suggestion of a rod he can easily source out from the U.K as if I am not mistaken he is from the U.K.
Marios
Marios
your being pretty defensive and seem to have a need to be right
there is no right or wrong here. its personal builder preference. my advice comes from building some 50 4g63 engines over the last 20 years.
my best advice is when people come in here asking such questions THEY SHOULD NOT BE BUILDING their own motors. thats the best advice anyone can give,