Just sniffin around to see if anyone has or knows where I could locate a set of 10:1 pistons for a 94 Galant GS. Used are fine, dont really feel like paying 500+.00 for afermarket.
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Just sniffin around to see if anyone has or knows where I could locate a set of 10:1 pistons for a 94 Galant GS. Used are fine, dont really feel like paying 500+.00 for afermarket.
the compression difference on the GS comes from the head. Not the pistons.
I had both in my hand, the recess noticeably less on the GS pistons than the std ones. Mitsu stated that they are 'no longer available' as they have their own part number. Whats up with that?
if u have a 7g 2.4 with the stock pistons and the dohc ur compression ratio should be around 10:1 and not the stock 9.5
did a quick search in the mitsu caps
3 different part numbers according to the system
94-mid 95 7gs had MD188114
mid 95-98 7gs had MD303070
and the gs does have its own part number
MD193495
now if you look it up the GS pistons are the cheapest, not sure what that means as in quality. i couldnt find anything about different compressions though either.
As well as the "64D" stamped on the top of the pistons. They may finally ending production for the GS pistons. If you want 10:1 compression, I will suggest swapping either the Hyundai G4CN or G4CR/G4CP head as the compression chambers are smaller than the 4G63 head. The G4CN heads are found in the 93-95 Elantra 1.8L, the G4CR found in the 93-95 Elantra 1.6L, and the G4CP in the 92-98 Sonata 2.0L. The difference between the G4CN and G4CR/G4CP is the shape of the intake ports: G4CN is the same as the 1G 4G63 while the G4CR/G4CP is somewhat oval shape close to comparsion to the 2G 4G63 intake ports.
i really didnt think they were different as when we dohc swap we end up 10:1
Hey thanks for the info, I KNEW they were different, I bought them from a guy on another DSM site 2 years ago for that specific reason. Its no big deal. I actually have used the Hyundai heads on other applications, in fact I think that we used a 1.6 hyundai head with the 94 GS pistons and had really good results. Im considering updating the trans on my galant from auto to manual ( auto is a pain in the a$$) and I just acquired cams from that actual 2.4 GS motor, also have the head and intake too, but someone had already taken the block. This would be the 4th dohc 2.4 7 bolt that we've built with really good results, they run great and realiable. Would be awesome to throw one of these into a 92 Mirage GS if I could find one, Im too lazy to try to rewire a base model and making mounts etc.
Stock GS cams are okay, they are based on the Euro NA 4G63 cams but with smaller lift. You are better off getting some used 264/272 cams
As far as intake manifold goes, try to get an Evo I-III or RVR SSG/HSG. They have shorter runners.
I have a short runner intake on it now, the stock one. The 2G (7g) head and intake have the long runners and a huge plenum. I dont want a race car, just wanted to add some bolt ons to give it a few more hp....the 9.5:1 2.4 in it now works really well. So you actually own a 94 GS? Ive never seen one on the road and the u pull it I go to had one but wasnt in a position to try to get anything that day, 3 days later I went back and the block was gone and the head and cams were literally thrown on the ground. One cam was 2 cars away. I dont get it.
The GS is a nice car, even in NA form. I guess the person pulling the engine has no clue about the GS.
That was my thought. They took the block probably assuming its the usual 94-98 block which it is but they are going to have a few more hp with those pistons in there. I didnt bother taking the head for myself, I have a head from a 98 Sonata and its EXACTLY the same, intake and all. ( with the long runners) I felt lucky just to get the cams once I found them. People are brutal at these u pull its, they will destroy an engine just to get a piston or 2 and leave all the rest in the mud. Youll have to fill me in on your mods to your GS, 4G67 head? Is that how you got that CR?
Yep. 4G67=G4CN from an Elantra, bump the compression to around 10.6:1. So far the head, 1G TB and IM, but I have JDM Cyclone IM with a 01 Diamante TB on it sitting in the garage...
whoever pulled it if they are using it for a regular 94-98 sohc they will encounter issues as it doesnt have the oil passages needed for the SOHC.
now i dont know if the pistons will cause more power even though they may have different design. i would figure if they were better they would cost more but they are cheaper than any other 7g piston and when the SOHCs do the head swap we end up in the same ball park with our pistons as it will never be the exact same setup as the OEM GS, diffterent HGs and other parts can lead to differences.
i want a GS as a project car to make awd turbo
Yeah thats right, even tho its 2G block, they blocked the oil passages at the factory, the same five that I PLUGGED on the ones I built, so yes, it wont work unlss they drill them out which they could. The passage is there, just blocked I think. I talked to wiseco and they can make 10.5:1 CR pistons custom, and he said that is the max for pump gas, so I could use hi test if there were any detonation issues. But for 550.00, wow. The factory 10:1s are alot cheaper, and i can use the part number you gave me to try to find them. Thanks, that helps.
Hey Mysticj, are you still running your original pistons or did you replace them?
glad i can help. i have the CAPS program on my lap top if you need any more part numbers
My first attempt at a 2.4 was a few years ago, I had a 2.4 sonata 1g block given to me, and just for fun I tried to mount the dual cam head and it fit! So I fenangled the timing pulleys and sich and was able to time it with the 2.0 belt ( 2.4 has one more tooth) cause I didnt know that they even made a 2.4 belt so I ran it with those 2.4 oe pistons and the compression was REALLY high, and it went like hell, but all kinds of detonation and oil burning issues. I never got one to work right, tried another block later but still burned oil like crazy. I never had luck with any of the older 1g blocks, 1.8s, 2.0s, 2.4s, but the 2G has served me well. Hone the cylinders, new rings, and they are great. My current one just turned 100k miles since I built it and its just starting to use some oil, not alot, but some. Since I have all the makings for the OE GS setup I figured I throw it all on there and put in a 5 speed and Im good to go.