Edwin909

Looking to pick up a supposedly b18cR block but what physical diffreneces can i look for to distinquish the difference between the two?.... example pistonds, crank, girdle anything to help me not get ripped off.

.Manny.

iTrader: (1)

Do a search for all the details.

The ITR crank has an "R" cast onto one of the counterweights. I do believe the rods have P73 cast on there as well

whited

Look at my thread from my signature I have pictures of my type R engine.

You should have a 4 to one header. The head should have the year in one of the circles. And the transmission should be stamped LSD N3E, but the stamp wears off since it is ink.

Inside the CAM looks different, the crank is thicker with the R on it, and the final gear to the transmission is different.

Oh and everything is marked P72 or P73.

TeamRedline89Hatch

My friends 96 type r is stamped j4d lsd and had a 4-2-1 cast manifold.

Edwin909

Remember guys im only looking for detials on the block, the R mark helps a lot but ive also heard of Gsr engines having p73 stamped on the rods, is there any diffrences between the girdles and i aldo heard that the b18cr has a small oil cooler between the oil filter but then i heard that all b18 vtecs have it also just need some confirmation.

TeamRedline89Hatch

If a gsr block has p73 rods or pistons they have been swapped with itrs. If it comes with a flywheel the itr weighs about 5 lbs less. My gsr weighed 19.4 lbs and my type r weighs 14.9 both factory and resurfaced.

whited

Oh I was assuming he was talking about a 98 Type R.

Edwin909

whats the stamp on the pistons?...

88LsRex

b18c = P72
b18cR=p73

The block will be stamped P72 on the back, The crank should be stamped P73 and the pistons should also be stamed P73, the head should be stamped PR-3.

Edwin909

does the p73 stamp on the pistons apply also on the usdm type r

88LsRex

Yes.

Edwin909

ok thank you guys for the help its gladly appreciated.

88LsRex

no problem.

jdmboyef9

Block wise they are the same. By looking at it the only give a way is the pistons should say P73 on the tops. The crank and rods are different as stated above, however if you drop the oil pan both gsr and type r say p72 on the bottom rod caps. The rods have an R on the side and the crank has an R only visible from one side. Most cases the pistons are your best id but clearly not %100

whited

I do believe the the block does have a p72 stamped on it on the back by the transmission.

Here are pictures of my 98 spec JDM. (Hopefully they are all right)

88LsRex

Deetz

The P72 engine block was used on all GSR, ITR and CTR engines

As pictured above, the easiest way to identify a true ITR engine is pop off the oil pan and look and the crank and rods. Also, the head should be a pr3 with P73 intake manifold. The The bracket where the optional a/c is stamped P73, and all itr has the aluminum engine brace on them that connects the engine to the tranny

jdmboyef9

What Deetz said

whited

Here is the picture of the AC bracket, and the upper power steering bracket.

Edwin909

You guys are beyond awesome this really does help a ton and i know the head is suppose to be stamped pr3 but this engine im trying to pick up has a gsr head, the seller said he like the smaller combustion chambers but he has the head buyilt to type r spec
i just wanted to know for sure the block was a type r and not a jdm gsr and you guys rocked it:D
anyways i have a few questions first whats this aluminum engine brace and will that affect my transmission options
secondly whats that gasket whited posted up of?.....

whited

Throttle body gasket, the label actually says it in the picture. The left is a gsr, the right is either a usdm or jdm type R. The intakes for the type Rs are larger.

Edwin909

Oh wow your right i feel dumb, well im not to wooried for the throotle body gasket the engine is fully rebuilt with zero miles and has a skunk2 intake mani so im sure he took the extra steps to get anew gasket for the TB anyways whats this aluminum engine brace, i just want to know if itll affect me trying to put my A1 transmission on there

whited

The AL stiffener is in the picture with the oil pan. It wraps around the oil pan, bolts into the engine and transmission. I don't know if it is causes a different bolt pattern, I think the AL uses the same pattern. The AL is just larger and stronger.

Here are pictures of what others have. It is a clutch dust shield and a none wrapping arm.

Also a picture of just the stiffener.

L.D. built

Yup don't forget that brace between the engine and transmission, it reduces flex under sum serious power loads.

Deetz

it has been mentioned