Petersubaru Posted September 26, 2006 Share Posted September 26, 2006 I am looking for a used motor and just seeking some opinions here as to the best 2.5 motor...SOHC or the DOHC...I am not sure, but I think the SOHC is newer...are there advantages or disadvantages to each one or maybe they are equally both the same...did certain years have repeated head gasket problems...Thanks Quote Link to comment Share on other sites More sharing options...
calebz Posted September 26, 2006 Share Posted September 26, 2006 I am looking for a used motor and just seeking some opinions here as to the best 2.5 motor...SOHC or the DOHC...I am not sure, but I think the SOHC is newer...are there advantages or disadvantages to each one or maybe they are equally both the same...did certain years have repeated head gasket problems...Thanks Best - USDM STi motor Quote Link to comment Share on other sites More sharing options...
beataru Posted September 27, 2006 Share Posted September 27, 2006 I like DOHC.... like the ej25 found the the RS because... the sti 3 gen has heads for it.. i think it was the 3... i gotta do some research..nevermind to sleepy... but i like 2 better than 1... more moving parts WHO CARES! Quote Link to comment Share on other sites More sharing options...
mellow65 Posted September 28, 2006 Share Posted September 28, 2006 in 99 they went to a SOHC design and fixed thier headgasket problems. The motor didn't lose any power going from DOHC to a SOHC both still rated at 160. But still the best motor ever is the ej22 buts thats just my $.02 Quote Link to comment Share on other sites More sharing options...
Petersubaru Posted October 3, 2006 Author Share Posted October 3, 2006 I am willing to here why the ej22 is the best...it is worth more then .02 cents to me ...thanks in 99 they went to a SOHC design and fixed thier headgasket problems. The motor didn't lose any power going from DOHC to a SOHC both still rated at 160. But still the best motor ever is the ej22 buts thats just my $.02 Quote Link to comment Share on other sites More sharing options...
kingbobdole Posted October 12, 2006 Share Posted October 12, 2006 I am willing to here why the ej22 is the best...it is worth more then .02 cents to me ...thanks http://www.ultimatesubaru.org/forum/showthread.php?t=65790 FTW... but I only kinda agree. Quote Link to comment Share on other sites More sharing options...
Snowman Posted October 12, 2006 Share Posted October 12, 2006 http://www.ultimatesubaru.org/forum/showthread.php?t=65790FTW... but I only kinda agree. Summarizing this thread for easy consumption: 1.EJ22 is non-interference (in my opinion, this is the most important factor) 2.EJ22 wiring is simpler 3.EJ22 has a proven track record of low HG failure while the DOHC EJ25 tends to have a high failure rate in comparison and the SOHC EJ25 hasn't been around long enough to be sure. Also, the SOHC EJ25, though apparently not prone to blowing HG's, is prone to external coolant leakage from the HG's. 4.Assuming that cost is a factor, EJ22s are generally a fair bit cheaper. Quote Link to comment Share on other sites More sharing options...
beataru Posted October 12, 2006 Share Posted October 12, 2006 Dont you know the manrule? BIGGER IS BETTER hehehe... wait im running a 1.8....... nevermind Quote Link to comment Share on other sites More sharing options...
johnceggleston Posted October 12, 2006 Share Posted October 12, 2006 I am looking for a used motor ...Thanks what are you going to put it in, it may make a difference?? Quote Link to comment Share on other sites More sharing options...
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