rhino6303 Posted August 15, 2014 Share Posted August 15, 2014 I have used the gates kits with water pumps for years now, Hondas, Subarus, mazdas. Never had one fail yet. I'm in the same boat (without the mazdas). My only issue was the casting on the gates pump on my wife's outback sport; it was so rough in spots the pump didn't fit properly without modification. Link to comment Share on other sites More sharing options...
RooTBeeR Posted August 15, 2014 Author Share Posted August 15, 2014 On your heads.....make sure and have the new one decked too if you have the used one decked so they're the same or you'll be fighting different compression ratios between banks and that's not good (ask me how I know this-not on Subaru's but on V8's from yesteryear) for tuning or driveability because, especially in our case, two will run leaner than the other two. In the racing world, the old saying is "If you really want to make a set of heads run worse than they did, port them yourself" and I have to tell you that this is an absolutely true statement. Unless you are doing everything else to support the PNP on the intake side (cams, valves, injectors, cam degreeing) you are wasting your time and going to make it harder to tune correctly. If you have a shop do it, at least (if they're worth a shit) all of them will be the same, but without previous experience (read YEARS), you can easily ruin the heads beyond repair. Besides, the more you open everything up, the less driveability you have. If you get lucky and everything is even but you open it all up, say, .020" total in all of the runners (which is not much-about the thickness of 6-7 sheets of paper), you will run into combustion chamber issues unless you do the same to the exhaust. At that point, without the supporting mods, you're worse off than you are if you stay stock. As for the water pump myth, I put the Gates on my build and have absolutely not one worry that it will fail. One thing I can promise you is that thousands and thousands and thousands and thousands of the Gates water pumps have been installed with no issue whatsoever. I have one on my 1997 OB wagon that's been on there for about 110K (290K total on it right now) and when I do a timing belt on it in the next few weeks, it will have another Gates pump put on it. The one thing I can guarantee without an fear of contradiction is that Gates has the pumps built to the exact same specifications that Subaru has them built to and most likely buys them from the same supplier, so while anyone's new part can fail, dealerships and repair garages and most DIY are NOT worrying about putting on a new Gates water pump when they purchase it. Good luck Dude. I dont want the heads ported. the VF40 already cant outflow the stock heads/cams. so that would just hurt my power band. If i can gather some $$$ I'll probably just give my heads+parts to outfront or infamous to put together so i dont have tot worry about any of it. and yes, if i do anything to the used head, i'd get it done to the new one also. Also, please remember that unless you plan on 500+whp, you DO NOT need the blue Gates timing belt (which you'll never see anyhow). Its a waste of money. get the regular kit, save $100. i'll be lucky to make 300 at the wheels lol so i already was saving myself the $100 and knew i didnt need that. "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
kred Posted August 15, 2014 Share Posted August 15, 2014 Rootbeer, do you know much about stock D25 heads, people's experiences with them, or how much power they can take reliably? I also went with basically brand new stock D25 heads (50 miles on them). Hope I made a fair choice. Link to comment Share on other sites More sharing options...
RooTBeeR Posted August 15, 2014 Author Share Posted August 15, 2014 my biggest reason was that my old heads were junk, and D25's were the easiest/cheapest way to bump up my compression. they have a smaller yet more hemispherical combustion chamber. Less surface area while maximizing volume. d25's have smaller ports/runners which will keep velocity higher at lower rpm. the trade off that is losing volume/flow/cfm at higher rpm. also, this is my daily driver. I do 99% city/stoplight driving. So i wanted as much low end torque/power as i could get. which the higher CR and smaller runners should help with by providing more off boost power until the tiny turbo spools. I dont do any 100+ highway pulls so i really dont need the top end power, and im fine with it dropping off after say 5500 rpm if that's what happens. as far as peoples experience with them, im not sure, i know a lot of the wrx guys are making over 300awhp with them. "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
kred Posted August 15, 2014 Share Posted August 15, 2014 Good to know. My car's a daily driver too, I'm glad I went with these over B25 heads. My engine builder said these heads gave me an 8.9:1 CR. Over my first 50 miles, my car does feel more peppy on the low end from what I've felt with no boost. Link to comment Share on other sites More sharing options...
RooTBeeR Posted August 15, 2014 Author Share Posted August 15, 2014 did you tune for it? because 8.2-8.9 is a big jump and might cause knock even under light loads i imagine. its really all preference though. If you plan on huge numbers, youre better off with high boost/low CR. If you plan on just decent power and a something peppy more like an autocross setup, higher CR/low boost would be more ideal. for pump gas though, i wouldnt want to go higher than 9.2-9.5:1. i should be at 8.77:1, i wanted 9:1 though ...maybe for the next rebuild, a 2.6L stroker with 9:1 CR and a vf52. only because a 3.6L would be a huge pain in thee arse and i'd never pass smog with it. haha i wonder how bad my MPG would get with one of those "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
kred Posted August 16, 2014 Share Posted August 16, 2014 Yea, I got a base map for the break in from STi Mikey. Looking to get at least 400 whp later on when I get a bigger turbo and front mount. Link to comment Share on other sites More sharing options...
RooTBeeR Posted August 16, 2014 Author Share Posted August 16, 2014 hope your trans holds. haha "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
kred Posted August 16, 2014 Share Posted August 16, 2014 Just swapped in an 04 JDM V8 STi 6 speed trans with a Southbend Stage 2 clutch. Should hold up fine. Link to comment Share on other sites More sharing options...
MrTris Posted August 16, 2014 Share Posted August 16, 2014 I had close to 9:1 on my 1st gen frankenmotor -- EJ20g with 22t heads, so it bumped up the CR. Enough so, that, I was able to hear audible det at stock boost levels. Err, I think we may have bumped it up to 10ish psi, but still, <10psi and det = bad bad bad. Somehow, I'm glad I let that car go, though, I wish I still had it. 'Twas peppy as f*ck. LWFW/Exedy clutch , 4.11s, rear LSD -- I was Porsche territory 0-60 for less than 5k all-in. Link to comment Share on other sites More sharing options...
RooTBeeR Posted September 15, 2014 Author Share Posted September 15, 2014 Just ordered my TIC FU cam bolts. "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
MrTris Posted September 15, 2014 Share Posted September 15, 2014 Just ordered my TIC FU cam bolts. Link to comment Share on other sites More sharing options...
06silvarubiLGT Posted September 15, 2014 Share Posted September 15, 2014 lol.. 3 week delay again?? Link to comment Share on other sites More sharing options...
MrTris Posted September 15, 2014 Share Posted September 15, 2014 lol.. 3 week delay again?? Ha! Only three weeks? Link to comment Share on other sites More sharing options...
06silvarubiLGT Posted September 15, 2014 Share Posted September 15, 2014 RootBeer- If you need those bolts ASAP PM me.. Link to comment Share on other sites More sharing options...
RooTBeeR Posted September 16, 2014 Author Share Posted September 16, 2014 lol.. 3 week delay again?? I'm still acquiring paychecks before I can order more parts. Ha! Only three weeks? lol no kidding RootBeer- If you need those bolts ASAP PM me.. I dont, but I'll keep that in mind. "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
FJuan Posted September 16, 2014 Share Posted September 16, 2014 Where are you at in the build stage so far? My wife's balls are delicious. Link to comment Share on other sites More sharing options...
MrTris Posted September 16, 2014 Share Posted September 16, 2014 Stage Scrilla Point Oh! Link to comment Share on other sites More sharing options...
kzr750r1 Posted September 16, 2014 Share Posted September 16, 2014 Laka Skrilla Suksa... Good move on the bolts I'm feeling the wallet tug as well. I have been plinking at little stuff needed so far. Hope to make a couple big steps soon. Link to comment Share on other sites More sharing options...
06silvarubiLGT Posted September 16, 2014 Share Posted September 16, 2014 I hear you both about the wallet stretch. I had all the parts for the SB to get put together then the winter car (01 forester) went and smashed a plug outta the head, but at 240k cant really complain other than bad timing. So had to take the block building money and buy a used engine. Hoping to have that together this week, b/c the LGT is starting to run a little worse as I drive it, I can even start to hear the exhaust note change, damn ringlands and valves! Link to comment Share on other sites More sharing options...
RooTBeeR Posted September 20, 2014 Author Share Posted September 20, 2014 http://img.tapatalk.com/d/14/09/21/zaqyjuqe.jpg Gots muh bolts. Build is still in the same spot. I should be able to put about 1k/month towards the build though. "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
RooTBeeR Posted September 22, 2014 Author Share Posted September 22, 2014 Ordered Company 23 Tools and Nameless Performance Air Injection Block Off Plates. "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
MrTris Posted September 22, 2014 Share Posted September 22, 2014 Ordered Company 23 Tools and Nameless Performance Air Injection Block Off Plates. You have an 05. Why do you need the airpump deletes? Link to comment Share on other sites More sharing options...
RooTBeeR Posted September 22, 2014 Author Share Posted September 22, 2014 I'm bumping up my compression by swapping to D25 heads. "Build" Thread <--Link (OLD) '05 EJ255 now a '13 EJ257 Bottom End w/D25 heads (NEW) Forever Slow [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
MrTris Posted September 22, 2014 Share Posted September 22, 2014 Oic. Link to comment Share on other sites More sharing options...
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