ITR v GSR v LS oil pump

[mrvanparys]

Hey, I was wondering if anyone knew if there is a difference between the 2 rotor gears inside the oil pump of the ITR, GSR and LS. I found a site selling the relief valve and spring for the ITR pump, but im wondering if the gears would need to be changed on an LS pump also to make it flow and pump like an ITR.
Thanks

 

[nfn15037]

ITR/GSR pumps are the same but the LS pump is not the same.

 

[brian11to1]

ITR/GSR flow more or have higher PSI that LS. For obvious reasons.

 

[posol]

they are also less brittle i hear. LS pumps tend to crack more often. I don't have any first hand experience though.

not sure on your whole gear-swap idea. i'm pretty sure that they would be the same thing, at least tooth wise, as you can put a vtec pump in an ls block

 

[mrvanparys]

I found the gears and spring for about 40 bucks so it may be worth a shot. I don't know how to make sure it is putting out this higher pressure though. Don't want my ls/vtec project to go boom.

 

[posol]

get an oil pressure guage

 

[araychel]

Originally posted by pissedoffsol@Dec 7 2004, 05:39 PM
get an oil pressure guage

[post=427903]Quoted post[/post]​

Actually, I believe that 96+ Integra oil pumps are the same. They have the same part numbers.