s'ko Posted September 15, 2009 Share Posted September 15, 2009 Here are some info about a high compression motor I just put together for my OBS Parts list: Phase 1 EJ25 Shortblock w/stock pistons & rods (rebuilt) Phase 2 EJ22 heads (120k) Cometic head gasket w/100mm bore. Phase 2 EJ22 Intake manifold Phase 2 EJ22 engine harness and sensors Assembly: The engine pull was pretty standard. EJ22 came out and was beheaded. Engine sat for a year w/minimal use & the coolant came out looking rust colored. Heads were cleaned off and then assembled onto the freshly rebuilt EJ25 short block. Heads were torqued down according to the FSM for non-turbo engines. (we’ll see how this holds up with the higher compression) The crank timing gear had to be replaced with the phase 2 gear, b/c there were more tabs than the phase 1 gear. The gear slid right onto the crankshaft w/no issues. The woodruff key is in the same spot and lined up perfectly. The sensors and the cam shaft timing pulleys from the EJ22 phase 2 heads were used. The knock sensor was taken from the EJ22 and put onto the EJ25 stock block. The temp sensor for the Phase 2 needs to be remove and put onto the Phase 1 water tube b/c it was 3 pins as opposed to the Phase 1’s 2 pins. The temp sensor on the Phase 1 can be removed and plugged. I left it in so in the future I can put in another temp gauge. I used the power steering pump from the Phase 2 motor b/c there was a sensor on the wiring harness to determine if the power steering fluid was low. All the other accessories bolted right up with no problems. Timing was set according to the EJ22 specs. The phase 1 short block is designed to fit onto the EJ tranny at 4 points. There are two bolts up top and the two studs at the bottom. The Phase 2 short block has 6 points. There are two bolts up top. One bolt at the bottom of the starter and a bolt near the set pin. Then there are the two studs at the bottom. In order to secure the starter, I took a bolt and cut the end off of it. Plan was to make the bolt into a stud at the bottom starter hole. I used JB Weld to secure the bolt into the hole and left a 1 inch of thread to secure the starter. Impressions: So far I have less than 100 miles on it. Once I get past the 500 mile mark, I plan to test the compression to see where it is at. Should have tested the compression before the rebuild to get a before and after. Butt dyno tells me it’s faster, but then again, I have been driving a EJ22T RX before this. Future plan: EJ D/R box 2 inch lift. Link to comment Share on other sites More sharing options...
monstaru Posted September 15, 2009 Share Posted September 15, 2009 love the roundy headlights....curious to see how this goes .would like to build one soon.......cheers, brian Link to comment Share on other sites More sharing options...
Redcap Posted September 15, 2009 Share Posted September 15, 2009 love the roundy headlights....curious to see how this goes .would like to build one soon.......cheers, brian +1 on the roundy headlights, that looks really cool! I like the concept of your motor build, too. Would this EJ25/EJ22 hybrid animal still be interference? Link to comment Share on other sites More sharing options...
s'ko Posted September 16, 2009 Author Share Posted September 16, 2009 yeah, it's still interference. will be driving the 30 mile trip 2 work tomorrow Link to comment Share on other sites More sharing options...
s'ko Posted September 17, 2009 Author Share Posted September 17, 2009 130 miles and counting on the motor 1st highway drive. At 70 mph, the engine was purring at 3000 rpm. 80 mph, the engine was at 3500 rpm. I use to be over 4000 rpm at 80 mph. No verdict yet on gas mileage, I have about 2/3 of a tank left. Overall the impression is great. Now to somehow speed up the next 370 miles. ECU is throwing P0420, but that’s to be expected b/c of the high flow exhaust. Link to comment Share on other sites More sharing options...
Gloyale Posted September 21, 2009 Share Posted September 21, 2009 At 70 mph' date=' the engine was purring at 3000 rpm.[/color'] 80 mph, the engine was at 3500 rpm. I use to be over 4000 rpm at 80 mph. How did swapping motors affect the RPM to Speed ratio? That should all be determined by the gear ratios? Is it an Automatic trans? And now with more power it can hold the TC lockup at higher speed? Link to comment Share on other sites More sharing options...
The Beast I Drive Posted September 21, 2009 Share Posted September 21, 2009 What timing belt did you use? Im assuming the EJ22 Phase 2 belt... I have been collecting parts and knowledge to build one of these myself, but Im going to be using Phase 1 EJ22 heads instead of Phase 2, and Ill but running Dual Weber IDF 40 carbs... The main thing I havent figured out yet is what timing belt to use, I figure the EJ22 belt, but I would like some clarification... -Bill Link to comment Share on other sites More sharing options...
s'ko Posted September 25, 2009 Author Share Posted September 25, 2009 What timing belt did you use? Im assuming the EJ22 Phase 2 belt... I have been collecting parts and knowledge to build one of these myself, but Im going to be using Phase 1 EJ22 heads instead of Phase 2, and Ill but running Dual Weber IDF 40 carbs... The main thing I havent figured out yet is what timing belt to use, I figure the EJ22 belt, but I would like some clarification... -Bill Catastrophic failure last monday. w/210 miles on the motor, the timing belt skipped and the motor is fubar. suspect the idler pulley failing, but can't be sure. Driver's side cam is hard to turn so i am pretty sure that some valves on that side are bent. I don't know about the pistons. pulling the heads sometime next month. Been really busy w/stuff. one a good note, bank has accepted out offer for a house so I get a 2 car garage to play in. bill, I used the Phase 2 stuff, but the phase 1 idler and other pulleys will bolt right up w/no problems. BW Link to comment Share on other sites More sharing options...
monstaru Posted September 25, 2009 Share Posted September 25, 2009 this is exactly why i would use phase one stuffs for the entire build.to maintain a non interference motor.......or is that possible?am i thinking about that right?(scratches chin)..........cheerrs, brian Link to comment Share on other sites More sharing options...
The Beast I Drive Posted September 25, 2009 Share Posted September 25, 2009 this is exactly why i would use phase one stuffs for the entire build.to maintain a non interference motor.......or is that possible?am i thinking about that right?(scratches chin)..........cheerrs, brian Idk, Ive heard different responses to that idea from several places, some say it would be non-interference becasue of the Phase 1 EJ22 heads, others say it would still be intereference becasue of the stroke on the 2.5 block... I honestly dont know... -Bill Link to comment Share on other sites More sharing options...
Gloyale Posted September 27, 2009 Share Posted September 27, 2009 Idk, Ive heard different responses to that idea from several places, some say it would be non-interference becasue of the Phase 1 EJ22 heads, others say it would still be intereference becasue of the stroke on the 2.5 block... I honestly dont know... -Bill It is all about Cam lift and timing. Of course if the heads or the deck have been machined too much this could change. But none of the EJ engines have pistons that protrude from the block. Phase 1 or Phase II 2.5 block with pre-97 2.2 heads will be non interference. Anything with post 97 2.2 or any phase II heads will be interference Link to comment Share on other sites More sharing options...
s'ko Posted September 28, 2009 Author Share Posted September 28, 2009 It is all about Cam lift and timing. Of course if the heads or the deck have been machined too much this could change. But none of the EJ engines have pistons that protrude from the block. Phase 1 or Phase II 2.5 block with pre-97 2.2 heads will be non interference. Anything with post 97 2.2 or any phase II heads will be interference Phase 1 block w/phase 2 heads = interference. confirmed the hard way:rolleyes: Link to comment Share on other sites More sharing options...
monstaru Posted September 29, 2009 Share Posted September 29, 2009 exactly what i was getting at.we nee dto match up the piston depressions when we do these builds or we will always get interference somehow.cheers, brian Link to comment Share on other sites More sharing options...
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