ThePog Posted August 10, 2012 Share Posted August 10, 2012 So the dirty old merc wagoon is pissing me off in a big way, engine is misfiring and playing up. So I got in the internets and found a boy in Hams who has an RB conversion kit that he made, have seen pics of the mounts etc and it all seems legit. So some questions; - What is the right engine/code/year to look for - are all the RB mounts the same across the years - This conversion is for a manual, will the box mount fit an auto - There is a driveshaft, this is for a manual nissan box, will it fit into the nissan auto? - Am I a dick? Go Quote Link to comment Share on other sites More sharing options...
DJZ Posted August 10, 2012 Share Posted August 10, 2012 1. What kind of RB are you after for a start. RB20E, ET, DE (3 or 4 types), 20DET (3 or 4 types), RB25DE (3 or 4 types), 25DET (3 types?), RB30E, ET, RB26DETT 2. I'm 99% certain the where the mounts bolt to the block is the same for all RB engines. The physical mounts themselves are different depending on year or if the motor was 4wd etc. 3. The mount on the autos is either futher forward or back from the manual mount, can't remember which but I think it's like 50mm out one way? 4. The yolks may be the same for the "small" boxes but the driveshafts are different lengths from memory and most of the shafts are 2 piece. Manual yolks are pretty easy to come by. RB25DET 2wd & RB30ET boxes take bigger yolks, the 4wd boxes are wacky. 5. Yes Quote Link to comment Share on other sites More sharing options...
ThePog Posted August 10, 2012 Author Share Posted August 10, 2012 25det probably, there is an intercooler and exhaust with custom dump pipe as well. So what would the right auto box be? Quote Link to comment Share on other sites More sharing options...
Unclejake Posted August 10, 2012 Share Posted August 10, 2012 6 millions of more easiness to just fix the motor that's in there but. How long do you usually keep cars? i.e. could the time invested in the RB swap pay itself off in driving joy? Quote Link to comment Share on other sites More sharing options...
ThePog Posted August 10, 2012 Author Share Posted August 10, 2012 Have you seen the systems diagram on those M104 engines? particularly the vacuum arrangements? It is a fucking miracle it goes at all TBH. The car is sweet but the autos are difficult/slow, the engines leak like a mitsi, and it has done 365000kms. I just think it will be a decent swap, with most of the hard work done already. And stop talking sense, you are causing me to question my foregone decision. Quote Link to comment Share on other sites More sharing options...
Borgweiser Posted August 10, 2012 Share Posted August 10, 2012 +1 for you are a dick.. Quote Link to comment Share on other sites More sharing options...
tim13 Posted August 10, 2012 Share Posted August 10, 2012 hey buddy , m104 motors are usually pretty good . oil leak will be headgasket and/or 'c' seal on timing chain cover , should be able to get both done for about $1000-1200 parts and labour friendlyish retail , what is the rough running issue ? what have you tried/checked so far , could be wiring loom insulation breaking up , airflow meter , could be something basic too , is yours coil on plug or distributor on front of engine ? (if dizzy ; cap and rotor will have green stuff growing inside) good luck ! cheers Tim , PS ; all realistic DIY stuff if you are keen/carefull & probably not as expensive as engine conversion/certification Quote Link to comment Share on other sites More sharing options...
ThePog Posted August 10, 2012 Author Share Posted August 10, 2012 Yea I have the seals to fix the cambox leak etc, just haven't got around to it yet. There is a vac leak somewhere that causes shit idling 75% of the time, and it falters sometimes on the open road which I think is the same issue. At the moment in addition to this when it is warm is is virtually undriveable, it just pisses and farts around, misfiring etc. This happened a year ago and my mech dude replaced the dizzy cap, which mostly fixed it. Just going out now to see if that is ok. I just want to get into it and know it will go everytime is all. Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted August 10, 2012 Share Posted August 10, 2012 so many better options over an rb (most have been poorly rebuilt and or are well overdue for a rebuild or have been subjected to 'drift mods') drop a feeayte in it for maximum joytimes Quote Link to comment Share on other sites More sharing options...
anglia4 Posted August 10, 2012 Share Posted August 10, 2012 k24 Quote Link to comment Share on other sites More sharing options...
durty Posted August 10, 2012 Share Posted August 10, 2012 2ZZ? Quote Link to comment Share on other sites More sharing options...
anglia4 Posted August 11, 2012 Share Posted August 11, 2012 2JZ No shit Quote Link to comment Share on other sites More sharing options...
Testament Posted August 11, 2012 Share Posted August 11, 2012 Quote Link to comment Share on other sites More sharing options...
durty Posted August 11, 2012 Share Posted August 11, 2012 tree fiddy? Quote Link to comment Share on other sites More sharing options...
ThePog Posted August 11, 2012 Author Share Posted August 11, 2012 You are all dicks. I will simply replace the plug leads for now. Quote Link to comment Share on other sites More sharing options...
camo_78 Posted August 11, 2012 Share Posted August 11, 2012 what bubbleduck said,8 cylinder of the v configuration.1UZ perhaps??less weight than a SBC or SBF Quote Link to comment Share on other sites More sharing options...
Testament Posted August 12, 2012 Share Posted August 12, 2012 actually a good cheap motor would be a 4.0 high output jeep engine. pretty grunts and good for about 2 million miles provided you own 3 oilfields. Quote Link to comment Share on other sites More sharing options...
HighLUX Posted August 12, 2012 Share Posted August 12, 2012 I agree with the jeep comment they can sure boogie for a big truck Quote Link to comment Share on other sites More sharing options...
ThePog Posted August 12, 2012 Author Share Posted August 12, 2012 Pretty sure the main issue is just the plug leads breaking down, $450 for a new set should sort that... Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted August 12, 2012 Share Posted August 12, 2012 ouch, just jew up on some that fit from the random lead shelf in repco? Quote Link to comment Share on other sites More sharing options...
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