How to tell a GSR B18C from a Type R B18c?

[swapdohc]

I am going to look at a civic with an alleged JDM B18C Type R swap. How do I know if it is a gsr engine with a red JDM valve cover or the real deal? Does the GSR have duel valve springs like the type r? If it doesn't I figured I could pull the valve cover and see if there were duel springs or not. If anyone knows of any block or head stamps the would distinguish the two I would greatly apreciate it. I intend to purchase this car very soon, please help!! Thanks.

 

[Vtec Andy.....]

you can tell by the intake manifold gsr is diff then type r ... and valve cover

 

[Capt. Orygun]

Engine code

GSR B18C1
R B18c5

(JDM type R's will NOT have a numerical designator, or so I hear)

 

[E_SolSi]

head codes

GSR = P72
ITR/B16 = PR3


intake manifolds

if by chance he is using a Skunk2 manifold on a GSR (copy of the JDM ITR manifold) the manifild will have a CARB number on it if its a real JDM ITR there will not be a CARB number on the IM

both JDM ITRs and GSRs will say B18C

both JDM ITRs and GSRs came with red valve covers

 

[red95solsi]

gsr has dual springs on one side i forget which side though i have skunk 2 valvetrain on my gsr now so both sides of mine have dual springs head code is an easier way to tell though

 

[swapdohc]

Thanks for the info.

So do both the GSR and ITR engines have duel springs? On which side intake, exhaust or both?

Thank you.

 

[JDMilan]

tranny codes also