The head stamp indicates it’s evo 1.Looks like someone slapped a 2g intake manifold on it!

fwdmaster said:

The head stamp indicates it’s evo 1.Looks like someone slapped a 2g intake manifold on it!

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Are those the heads with the big ports?

fwdmaster said:

The head stamp indicates it’s evo 1.Looks like someone slapped a 2g intake manifold on it!

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What about the head stamp indicates it is from an Evo? The head off my '96 has a G6K stamping. So... ???

Looks like a regular 'ol 2G engine to me. @OG_Nocturnal , what evidence do you have that makes you say Evo 1?

Does it have a VIN stamped on it? That'd be the easiest way of learning what it is from. See: Block Identification.

19Eclipse90 said:

What about the head stamp indicates it is from an Evo? The head off my '96 has a G6K stamping. So... ???

Looks like a regular 'ol 2G engine to me. @OG_Nocturnal , what evidence do you have that makes you say Evo 1?

Does it have a VIN stamped on it? That'd be the easiest way of learning what it is from. See: Block Identification.

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All I kno it the tranny is out of an evo, the turbo is out of an evo so I figured the engine was also out of an evo...

Both things that I could easily bolt to a 2G engine and, on the outside, look exactly like what you have.

I'm not saying it isn't from an Evo. I'd agree there's a sufficient amount of evidence to suggest that it might just be. But you need to look past what is bolted to it if you really want to know.

Truly, I have no idea what the difference between a 2G head and an Evo head is. Never had an Evo head so I can only go by what I read. If you say camshafts, I'll refer you to the above about putting them in another head.

I can't say I've studied Evo blocks either, so I'm not sure what's different between one of those and a 2G block. If you say pistons, then I'll say you need to look at the pistons to find out what you have, not the exterior of the block. Get where I'm at with this?

Does it have a VIN on it?

Oh yeah I completely get what your saying bro, unfortunately the block and head is at my dads house so I can't check the vin # atm but I will as soon as I can!

All of this come out of a 95 gsx so there's no telling

I’ve never had my hands on an evo 1-3 engine, however reading from credible sources here in the past and hearing from credible sources in person there’s next to no difference internally between the 2. Head is the same exact small port casting as what we had on the 2g here and I’ve been told the ONLY overall difference is slightly different cam shafts, some will argue the pistons are like .2 higher in compression but others versed in the subject matter will say they’re the same, so even if that were to be true that slight of a difference isn’t noticeable. The biggest differences were the external components like the intake manifold (and even then the evo 1-2 may very well be the same as what we got on the 2g that I’m unsure of but I never hear of anyone seeking them out so I’m under the assumption they’re the same), exhaust manifold (again, evo 1-2 is essentially the same as a 2g but casted more open at the inlet for the 7cm housing) as the evo 3 unit is casted more open and casted with nickel however once you port them the difference is the same between the 2 except ones cast with nickel, throttle body more similar to that of a 1g non turbo, came factory with 16g variants opposed to the t25, etc.

As far as coming across Evo 1-3 engines in the states it happens but not at all common. In the days when the JDM engine craze hit very few would pay $2k for the engine as most in the DSM community were aware of the very slight differences and thought that to be absurd when (at the time) a running 2g 7 bolt could be had for a couple hundred bucks and you weren’t taking a chance on a $2k dollar engine shipped from Japan that might have been the reason the car was junked to begin with. That’s not to be discouraging by any means, but more so to point out wether it is or isn’t don’t expect anything more extravagant than any other 2g 7 bolt.

I bought a gsx years ago for the manual drivetrain. But before hand I did some work on my auto setup at the time without doing the research such as gear ratios and the differences between 1G transfer cases and 2G transfer cases and basically trashed a new rebuilt auto tranny, so when I bought the gsx I made sure to check everything, and I'm glad I did because I had to change the ring and pinion gears in my rear end to match up with the gear ratios in the manual tranny that come out of the gsx. Because its an Evo tranny.

And to be honest the cams in that head are semi rusted and will be replaced when I build it up in the future...

Definitely looks like an engine. Thread closed.





The pistons should be a giveaway too. The Evo pistons were stamped differently on mine. The OG engine that came out of my 2G Talon(in sig) was an Evo 3 long-block. Was trashed beyond belief but I remember the pistons.

Spleen8urLSX said:

I’ve never had my hands on an evo 1-3 engine, however reading from credible sources here in the past and hearing from credible sources in person there’s next to no difference internally between the 2. ... That’s not to be discouraging by any means, but more so to point out wether it is or isn’t don’t expect anything more extravagant than any other 2g 7 bolt.

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Thank you for providing some insight here. And your post is basically what I was working towards. At what point does it actually matter? Like, cool, I guess. But if there's nothing about it that's different or better than a typical 2G engine, it really doesn't matter what it's from.

Maybe originally from a early EVO but it could have been rebuilt with DSM parts. As for the block, if it's a early EVO's block and if it still has all original parts from factory, the piston top should show a "EV" or a "E3" stamp. To distinguish for sure, you should remove the oil pan and check inside. If it has 1g style oil squirters (oil jets), the same oil pickup tube as 1g 7 bolt (The one w/ a bracket that mounts to a main bolt), and if the block has a 2g water pump, then that engine is from early EVO or RVR Hyper sports gear.

I think it was a jdm swap that had a blown head gasket or something like that, I bought the car over 10 years ago so my memory is a little foggy

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So I was told to look here in the first pic for the vin but its blank.... is this normal?

Replacement engines do not have a vin.

That looks like a regular 7 bolt 4g63 engine to me, replacement engines have no vin stamped into them, I would guess that the original 7 bolt crankwalked back in the day and was replaced with the one thats laying there.

Its a 7 bolt but I think its an early one.. hell idk

If you want to know what it is, as I told you that you have to remove the oil pan to check inside. P.S There is no vin number in Japan.

DSMPT said:

If you want to know what it is, as I told you that you have to remove the oil pan to check inside. P.S There is no vin number in Japan.

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Yeah I'm going to, I just didn't have time yesterday.

DSMPT said:

Maybe originally from a early EVO but it could have been rebuilt with DSM parts. As for the block, if it's a early EVO's block and if it still has all original parts from factory, the piston top should show a "EV" or a "E3" stamp. To distinguish for sure, you should remove the oil pan and check inside. If it has 1g style oil squirters (oil jets), the same oil pickup tube as 1g 7 bolt (The one w/ a bracket that mounts to a main bolt), and if the block has a 2g water pump, then that engine is from early EVO or RVR Hyper sports gear.

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It looks like it uses the 2g water pump from what I can tell

It doesn't have the oil pan, just take a pic from the bottom. Since we don't know the history of the engine, can't tell anything for sure by just seeing those pics. But I guess the block is from early EVO or RVR HSG since it has a 2g water pump and 1g 7 bolt style crank plate. If that's from early EVO or RVR HSG, you would see the 1g dsm style oil squirters inside.

Yeah it is irrelevant, I just wanna know the history of this engine, thats all

The "PB" stamping is a known prefix for Evo 1 engines. Everything else seems to match Evo 1. Add that to the Evo 1 turbo and Evo 1 GSR transmission, you have an Evo 1 engine that someone changed the intake manifold on.

Thanks everyone for y'alls input

Does anyone know if the Rvr 4G63 engine block has oil squirters?