Civic EG

I Ive got a b18c but do not know if its a B18c spec r, or a B18c sir-g. Any ways of finding that out?

Also, what is the difference between a c1 head, c5 head, and the B18C head (from japan)?

the manifold will tell you what motor you have. Post a pic.

It will also say on the block B18c something if its an american motor.


the C5 and spec R heads will have pr3 on the casting some where.

Greasedmonkey wrote: It will also say on the block B18c something if its an american motor.

I understand. But It says B18C only. Just want to figure out if its a B18c spec r, or a B18c sir-g

The head says this...


And the block says this...

I'm pretty sure that's a B18C1 equivalent. If the intake manifold is upside down and has the lever with a dashpot on the FPR side that it's definitely a GSR.

Greasedmonkey will come back and confirm this but I have a GSR and it has P72 stamped on the head just like yours.

btw Greasedmonkey is awesome.

just let me know what type of pictures to take and show you guys so you can tell what type of motor i got

Take a picture of the intake manifold or of the engine bay facing the car if the engine is in the car already.

suspendedHatch wrote:I'm pretty sure that's a B18C1 equivalent. If the intake manifold is upside down and has the lever with a dashpot on the FPR side that it's definitely a GSR.

Greasedmonkey will come back and confirm this but I have a GSR and it has P72 stamped on the head just like yours.

btw Greasedmonkey is awesome.

Im awesome!! Wow, thanks.


Yes, P72 is a gsr head. You have what seems to be a JDM GSR or SiR-G motor.

When and if you order a new intake manifold for this motor, get one for a gsr.

That One Dude wrote:Take a picture of the intake manifold or of the engine bay facing the car if the engine is in the car already.

Here yah go. . .

Greasedmonkey wrote:

suspendedHatch wrote:I'm pretty sure that's a B18C1 equivalent. If the intake manifold is upside down and has the lever with a dashpot on the FPR side that it's definitely a GSR.

Greasedmonkey will come back and confirm this but I have a GSR and it has P72 stamped on the head just like yours.

btw Greasedmonkey is awesome.

Im awesome!! Wow, thanks.


Yes, P72 is a gsr head. You have what seems to be a JDM GSR or SiR-G motor.

When and if you order a new intake manifold for this motor, get one for a gsr.

Thats what im trying to figure out. If its a jdm gsr, jdm type r, or sir-g. But thanks for the tip on the intake manifold.

Sir-g

JUICE wrote:Sir-g

how can you tell? Like whats a dead give away?

here's a pic of a type r....





the USDM B18C1 (GSR) and JDM B18C (Sir-G) look like their intake manis are on upside down, like the picture you posted


nice swap

Sir-g and GSR are the same motors pretty much.

ITR and Spec R are the same.

They just come from different sides of the pond.


You have a JDM B18c motor, which is a Sir-G. If you want to get more parts for it, you will be ordering parts for a USDM GSR motor. Its all the same. The main difference will be the intake manifold. It has to be GSR/Sir-G (p72) head specific.

The ITR and Spec R both use the PR3 casting which is the same as the B16a/B17a head.

JUICE wrote:here's a pic of a type r....





the USDM B18C1 (GSR) and JDM B18C (Sir-G) look like their intake manis are on upside down, like the picture you posted


nice swap

Gotcha thanks man