B18b B18C or B16A
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From: akron
A usdm ITR will have b18c5 stamped on the left side of the block near where the tranny mounts. If its a gsr it will say b18c1.
If its jdm, both the ITR and GSR are stamped B18C. One way to differentiate is the intake manifold. A gsr has a much larger dual runner manifold, while an ITR has the same manifold as a b16.
If its jdm, both the ITR and GSR are stamped B18C. One way to differentiate is the intake manifold. A gsr has a much larger dual runner manifold, while an ITR has the same manifold as a b16.
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Joined: Oct 2005
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From: Texas
Right. It has B18C stamped on the block and PR3-3 on the head but on the oil pan it has P72. How do I tell if it is a true Type-R with the high compression pistons, with out removing the had to look for a casting number of P73 on the piston????
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From: Allentown PA, - Phila, PA
The ITR should have higher compression numbers, as it has higher compression pistons...
Did you look at your IM?
If it has the IAB system then it's a GSR motor not an ITR...
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From: Allentown PA, - Phila, PA
Also, if I'm not mistaken, the ITR has dual valve springs on both the exhaust and intake valves, whereas the GSR motor only has dual springs on the intake valves...
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From: Texas
Well you know that the head is a PR-3, so its more than likley an ITR.
You know that the block stamp is a B18C, JDM engine.
You could check the ECU and verify that its from an ITR. Then run a compression check like said above. Other than that, the only real way to tell is drop the oil pan and have a look at the crank.
The only possibility that I see here is a "poor mans ITR", which is a GSR block and a B16 head. Is the seller claiming a full swap, including LSD tranny? Are there any mods to the car?
You know that the block stamp is a B18C, JDM engine.
You could check the ECU and verify that its from an ITR. Then run a compression check like said above. Other than that, the only real way to tell is drop the oil pan and have a look at the crank.
The only possibility that I see here is a "poor mans ITR", which is a GSR block and a B16 head. Is the seller claiming a full swap, including LSD tranny? Are there any mods to the car?
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From: Texas
Yes he is claming a full JDM swap with LSD and all. I looked at the car and it has the S80 tanny but I could not find the LSD ink stamp. It has carbon fiber intake, header and for some reason a full port polish on the head. And your usual new waterpump, oil pump, timing belt etc.