McDave Posted August 14, 2008 Share Posted August 14, 2008 The '87 RX for sale nearby has a toasted ea82T motor. I'm just wondering what my options are as far as replacing the longblock, or the shortblock plus one head, with something used? I know the SPFI motors have too much compression and the carb motors have closer to what's needed in that area. But do the carb longblocks have the guts to handle a turbo, or is the turbo longblock a much different and better piece? I need a link. Link to comment Share on other sites More sharing options...
McDave Posted August 14, 2008 Author Share Posted August 14, 2008 Mods please move to the Old Generation forum. Thanks Link to comment Share on other sites More sharing options...
GeneralDisorder Posted August 14, 2008 Share Posted August 14, 2008 Carbs are 9.0:1 and are still too high comp. to use with a turbo. GD Link to comment Share on other sites More sharing options...
McDave Posted August 14, 2008 Author Share Posted August 14, 2008 Carbs are 9.0:1 and are still too high comp. to use with a turbo. GD Well that settles that. Thanks for the info. That explains why it's still for sale. Move along... nothing to see here. Link to comment Share on other sites More sharing options...
calebz Posted August 16, 2008 Share Posted August 16, 2008 Watch it Rick, you are heading into the whole 'opinion as fact' thing The carb block works great with the EA82T IMO its not just a straight swap, but it isn't too hard.. But what do I know, I only have one. Any interest in passing on the info for the for sale RX? I have a line on an EJ20G that may need a home. Link to comment Share on other sites More sharing options...
McDave Posted August 16, 2008 Author Share Posted August 16, 2008 Watch it Rick, you are heading into the whole 'opinion as fact' thing The carb block works great with the EA82T IMO its not just a straight swap, but it isn't too hard.. But what do I know, I only have one. Any interest in passing on the info for the for sale RX? I have a line on an EJ20G that may need a home. Define "isn't too hard" please! Link to comment Share on other sites More sharing options...
WoodsWagon Posted August 16, 2008 Share Posted August 16, 2008 Russ's probably would have worked fine if he hadn't gotten greedy with the boost... Link to comment Share on other sites More sharing options...
Phizinza Posted August 17, 2008 Share Posted August 17, 2008 Heads are different on those two engines so you would need only the short block and then put all your turbo ea82 parts on it. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted August 17, 2008 Share Posted August 17, 2008 Yes - you can do it. Just don't get crazy with the boost. It is also very important when considering something like this to plan for all the accesories you will need to add. Obviously the stock boost level will have to be reduced so there's that stuff, and the engine monitoring needs to be.... I would say upgraded but the stock dash doesn't have much to offer so I'll say you NEED monitoring equipment. Wideband, EGT, Boost gauge, etc, etc. Also the installation of an intercooler would be almost required to have any hope of keeping the block in one peice for long. Of course you can do it - but the amount of money you have to throw at it to do it reliably and with "peice of mind" is more than what you will get out of it in the end IMO. That is just my opinion though, and I firmly beleive that all forms of the EA82 are dead ends. With the EJ22 so cheap, so increddibly reliable, and adaptor plates now availible from many sources for cheap, etc, etc. There just isn't a place in the Subaru world for the EA82's, other than as a museum peice, for those seriously interested in power, reliability, and econemy. I'm not dogging the EA82 - and there are plenty of them out there that will continue to serve folks well for another decade or two. But for all the people that are interested in doing something other than stock with their EA82 bodied cars it's going to be EJ or nothing very shortly. You should have seen all the EJ'd cars at the WCSS this year! Hell I bought a CNC'd adaptor plate for $100. For $250 I can have a used EJ22 locally off a shelf with a warantee! GD Link to comment Share on other sites More sharing options...
calebz Posted August 17, 2008 Share Posted August 17, 2008 Yes - you can do it. Just don't get crazy with the boost. It is also very important when considering something like this to plan for all the accesories you will need to add. Obviously the stock boost level will have to be reduced so there's that stuff, and the engine monitoring needs to be.... I would say upgraded but the stock dash doesn't have much to offer so I'll say you NEED monitoring equipment. Wideband, EGT, Boost gauge, etc, etc. Also the installation of an intercooler would be almost required to have any hope of keeping the block in one peice for long. Of course you can do it - but the amount of money you have to throw at it to do it reliably and with "peice of mind" is more than what you will get out of it in the end IMO. I guess I'll just have to rely on my own experience over your... ummm... 'facts' . About the only thing on that list that is even remotely a NEED, is an intercooler. Stock turbo, stock boost, that setup will run all day long. the need for extra monitoring equipment is not drastically increased simply by the change in static compression ratio. It would be just as nice to have it all on the stock setup. But again, its not like I have done it before or anything We all know you are enamored with EJ22. That doesn't mean that every time someone asks a question about an EA82 that you need to swoop down and opine loudly while giving the illusion that it is a statement of fact. We get it, you think the EA82 sucks. Link to comment Share on other sites More sharing options...
calebz Posted August 17, 2008 Share Posted August 17, 2008 Define "isn't too hard" please! Its pretty much a straight short block swap.. The carb motor even has the mounting hole for the knock sensor. The biggest thing you will have to adjust for, is with the raised static CR, you will need to use decent gas.. no more 85/87 octane. Link to comment Share on other sites More sharing options...
NorthWet Posted August 17, 2008 Share Posted August 17, 2008 On a more practical and civil note... As mentioned, the heads are different to the point of needing the turbo (or at least modified N/A MFPI) heads. There is no knock sensor on the carb block. I can't remember off hand if there is even a mounting boss on the non-MPFI blocks. The turbo and N/A MPFI blocks have a special oil/vapor separator chamber and plate at the back of the block (underneath the flywheel) that leads to an additional PCV fitting. I suspect/surmise/believe (aka not fact ) that this is needed to help deal with the extra expected blowby of a turbo'd engine. Things may get ugly if not compensated for. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted August 17, 2008 Share Posted August 17, 2008 I'm just cautious with stuff like that. I won't raise the boost on my SS even 1 pound till I have everything in place for complete monitoring. It's not that the EA82T with a carb short block *requires* these things, it's more that we have all seen the results of poorly planned and modded EA82T block swaps on this board. The vehicle is old, and the parts are used. Just a single poorly performing injector could wipe out a lot of time and effort by runnning lean in a cyinder. Not to mention the car he's talking about has a blown EA82T - why did that happen? It's impossible to say. All I'm saying is that without the additional monitoring gear you are taking taking a big risk doing something like this. If the vehicle was brand new and you were installing a new carb short block on an engine with 0 miles then it wouldn't be nearly as risky. But you are putting a carbed short block into a car that already ATE a turbo short block. I don't think that's a good idea without a lot of investment in new parts and a comprehensive monitoring system so you can avoid a tragic waste of time. GD Link to comment Share on other sites More sharing options...
beataru Posted August 17, 2008 Share Posted August 17, 2008 Forge the internals!!!! and boost it to the moon! and then sell me your block. Link to comment Share on other sites More sharing options...
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