Thanh Posted March 1, 2007 Share Posted March 1, 2007 Hey guys I tried searching for this before I posted it I swear . Some guy is selling me an Rb25det complete with Trans ecu, wire harness and a greddy intake manifold. Hes giving me a really good deal, but the thing is I want to make sure its an RB25det not an RB20. I want to know visually what will I need to look at to make sure that I am not getting jip? Besides the block #. Quote Link to comment Share on other sites More sharing options...
stony Posted March 1, 2007 Share Posted March 1, 2007 As long as the block number dosnt look tampered with thats pretty solid. There are a handful of people here that can tell you the exact differences but if you go to http://www.zeroyon.com and ask that question you will have a page of diffrences in a couple hours. the site is based out of the RB homeland okinawa japan:biggrin: Quote Link to comment Share on other sites More sharing options...
eh? Posted March 2, 2007 Share Posted March 2, 2007 If it indeed does have a Greddy intake manifold (unmodified) then you know it is an RB25. It will not fit the RB20. Quote Link to comment Share on other sites More sharing options...
Thanh Posted March 2, 2007 Author Share Posted March 2, 2007 If it indeed does have a Greddy intake manifold (unmodified) then you know it is an RB25. It will not fit the RB20. Awsomeness thanks for the help. I will check it out today and let you guys know if its coming home or not. Quote Link to comment Share on other sites More sharing options...
Careless Posted March 2, 2007 Share Posted March 2, 2007 Awsomeness thanks for the help. I will check it out today and let you guys know if its coming home or not. as stony said, if you look in the block stamp area, it will say so. but some have been known to grind and re-punch. Quote Link to comment Share on other sites More sharing options...
Dramier Posted March 2, 2007 Share Posted March 2, 2007 Couple of easy things.. First, if it has a stock intake manifold, then the last runner on the intake manifold will be indented on the RB20, no indentation on the RB25. If the runners are all even, then it's an RB25. Second, RB25's have a VTC solenoid on the end of the camshaft which requires a bulge in the timing cover. Supposedly it can be removed, but there's no reason why it should be. Here's a pic of an RB20: And another: Now here's an RB25: Another view of an RB25: Hope that helps you out a little. Quote Link to comment Share on other sites More sharing options...
Careless Posted March 2, 2007 Share Posted March 2, 2007 Dramier, I thought only the R33 had the VTC. Quote Link to comment Share on other sites More sharing options...
alexideways Posted March 2, 2007 Share Posted March 2, 2007 Dramier, I thought only the R33 had the VTC. R32s NEVER came with the RB25 as it didn't exist yet... Quote Link to comment Share on other sites More sharing options...
Thanh Posted March 3, 2007 Author Share Posted March 3, 2007 Ok so I got off too late and didn't get to see it. I told him i see it tommorrow. From what I hear, supposely the motor had a blown head gasket and has been sitting for 2 1/2 years. Rust has got into the block and everywhere else. He is saying it needs a rebuild. I told my uncles employee to come check it out with me on monday. Any reason why I should not take it. Ill check it out tomorrow and post some pictures to get opinions. Its a good deal, but I dont wanna pay for junk > Quote Link to comment Share on other sites More sharing options...
Careless Posted March 3, 2007 Share Posted March 3, 2007 R32s NEVER came with the RB25 as it didn't exist yet... correct you are, alex. but i do know that there is a RB25 head that does not have VTC. Quote Link to comment Share on other sites More sharing options...
eh? Posted March 3, 2007 Share Posted March 3, 2007 R32s NEVER came with the RB25 as it didn't exist yet... That's not true. Some R32's did have RB25DE's which did not have vtc . RB25DET's started in R33's. Quote Link to comment Share on other sites More sharing options...
alexideways Posted March 3, 2007 Share Posted March 3, 2007 That's not true. Some R32's did have RB25DE's which did not have vtc . RB25DET's started in R33's. :iagree:My bad, It was a typo, that's what I was going to say, the only NONE VTC RB25 heads were on the first series N/A 25s. ...Any reason why I should not take it....Its a good deal, but I don't wanna pay for junk > You answered your own question here, it all depends on the price. It might be a good deal for a working engine, but might not be such a good one for a piece of junk. Check around various sites to see how much a gasket set, timing kit, rings and so forth cost and add it to the price of the engine. Then factor in the time you'll have to spend to, first do the job and second wait for all the parts to come in trough the mail and you'll see that it might no be such a good deal after all. On an other note, the most flagrant difference that I can see between the two engines is, the RB20 has ribbed valve covers and the RB25 has smooth covers. EDIT: Never minde my last comment, I just saw an RB20 with smooth covers. Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted March 3, 2007 Share Posted March 3, 2007 FYI the greddy intake manifold is a cashy piece, may make the purchase worthwhile. Evan Quote Link to comment Share on other sites More sharing options...
Thanh Posted March 3, 2007 Author Share Posted March 3, 2007 :iagree:My bad, It was a typo, that's what I was going to say, the only NONE VTC RB25 heads were on the first series N/A 25s. You answered your own question here, it all depends on the price. It might be a good deal for a working engine, but might not be such a good one for a piece of junk. Check around various sites to see how much a gasket set, timing kit, rings and so forth cost and add it to the price of the engine. Then factor in the time you'll have to spend to, first do the job and second wait for all the parts to come in trough the mail and you'll see that it might no be such a good deal after all. On an other note, the most flagrant difference that I can see between the two engines is, the RB20 has ribbed valve covers and the RB25 has smooth covers. EDIT: Never minde my last comment, I just saw an RB20 with smooth covers. Yea I know. If its pretty much rusted, I am looking at some big bucks. Waterpump, thermostats, gaskets, I know for a fact I gotta take the block apart to see how much damage has the rust done. FYI the greddy intake manifold is a cashy piece, may make the purchase worthwhile. Evan Definitely thought of that one Quote Link to comment Share on other sites More sharing options...
240Z_Master Posted March 3, 2007 Share Posted March 3, 2007 Awsomeness thanks for the help. I will check it out today and let you guys know if its coming home or not. Where are you in California? If you need me to go check it out with you I can if you're local. -Quoc (714) 878-9258 Quote Link to comment Share on other sites More sharing options...
Thanh Posted March 4, 2007 Author Share Posted March 4, 2007 Motor was no good. Quote Link to comment Share on other sites More sharing options...
Thanh Posted March 4, 2007 Author Share Posted March 4, 2007 Quote Link to comment Share on other sites More sharing options...
Thanh Posted March 4, 2007 Author Share Posted March 4, 2007 I think that shows enough. I would like to thank everyone for helping me out. Quote Link to comment Share on other sites More sharing options...
240Z_Master Posted March 4, 2007 Share Posted March 4, 2007 Yeah... told ya! hehe Quote Link to comment Share on other sites More sharing options...
Thanh Posted March 4, 2007 Author Share Posted March 4, 2007 Yeah... told ya! hehe Thanks for your help Quote Link to comment Share on other sites More sharing options...
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