jc052685 Posted December 16, 2009 Author Share Posted December 16, 2009 Are the times in your sig are with the old 274rwhp tune? yes... Quote Link to comment Share on other sites More sharing options...
1 fast z Posted December 16, 2009 Share Posted December 16, 2009 Is it a stock bore motor? Stock head bolts? Quote Link to comment Share on other sites More sharing options...
Rustyfriend Posted December 16, 2009 Share Posted December 16, 2009 Then would should my next step be in trying to solve my HG problem? having the bottom of the head resurfaced Quote Link to comment Share on other sites More sharing options...
RedBeauty84ZX Posted December 16, 2009 Share Posted December 16, 2009 Then would should my next step be in trying to solve my HG problem? How many lbs do you torque the head down? You may want to try a better quality gasket then felpro....maybe a metal headgasket. Quote Link to comment Share on other sites More sharing options...
sq_creations Posted December 16, 2009 Share Posted December 16, 2009 What do your spark plugs look like? Any speckles? Quote Link to comment Share on other sites More sharing options...
jc052685 Posted December 16, 2009 Author Share Posted December 16, 2009 Is it a stock bore motor? Stock head bolts? Junkyard motor that was rebuilt. Thats how I got it out of the junkyard. Dont remember the overbore. maybe .020. ARP head studs. How many lbs do you torque the head down? You may want to try a better quality gasket then felpro....maybe a metal headgasket. Torqued to either 70 or 75 ft/lbs. dont recall. having the bottom of the head resurfaced Only 6-7 miles since the head was resurfaced. Head was put back on and driven straight to the dyno. What do your spark plugs look like? Any speckles? They have a few hundred miles on them or so but they looked really good when we checked compression once the motor developed a missfire. Quote Link to comment Share on other sites More sharing options...
1 fast z Posted December 17, 2009 Share Posted December 17, 2009 Did you retorque the head? You should always run it up to opperating temp for 30 minutes, build some heat in the motor. Let it sit overnight, then pull the valve cover and retorque the head. Do this by starting in the middle, back each bolt off 1/4 of a round to break loose static friction, and do a one sweep motion to the desired torque spec. Without doing this you risk blowing a gasket. Atleast with the stock head, you dont have to pull the cam(s) to re-torque the head! Quote Link to comment Share on other sites More sharing options...
Zmanco Posted December 17, 2009 Share Posted December 17, 2009 Did you retorque the head? You should always run it up to opperating temp for 30 minutes, build some heat in the motor. Let it sit overnight, then pull the valve cover and retorque the head. Do this by starting in the middle, back each bolt off 1/4 of a round to break loose static friction, and do a one sweep motion to the desired torque spec. Without doing this you risk blowing a gasket. The Fellpro gaskets say "no retorque" right on them so I've never done this. Just curious, I have a few thousand miles on my new motor (with Felpro) and have so far not gone above 8 psi boost, although I plan to soon. Is it too late to retorque the bolts? Quote Link to comment Share on other sites More sharing options...
1 fast z Posted December 17, 2009 Share Posted December 17, 2009 Selling point at best. I always re-torque, felpro, hks, solid copper, whatever. Things settle, things stretch, etc. I am just lending my experience. Quote Link to comment Share on other sites More sharing options...
jc052685 Posted December 17, 2009 Author Share Posted December 17, 2009 I will be retorquing this time for sure.... Quote Link to comment Share on other sites More sharing options...
Sideways Posted December 26, 2009 Share Posted December 26, 2009 This is why i had my block O-ringed. Impressive numbers btw- I cant wait to have mine tuned here soon. Quote Link to comment Share on other sites More sharing options...
slownrusty Posted December 26, 2009 Share Posted December 26, 2009 Good feedback and thread! How was the weekend Jeff...did you see the pics of PlanetZero on Houston Imports? Yasin Quote Link to comment Share on other sites More sharing options...
jc052685 Posted December 27, 2009 Author Share Posted December 27, 2009 Good feedback and thread! How was the weekend Jeff...did you see the pics of PlanetZero on Houston Imports? Yasin Good weekend man. Nah, have not looked on H-I. Planning on having the car running in a few minutes:mrgreen:. Quote Link to comment Share on other sites More sharing options...
dhughes Posted February 25, 2010 Share Posted February 25, 2010 I feel like this is a noobish question, but why do l28et make more torque than hp??? i though it was usually the other way around. Nice numbers tho Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted February 25, 2010 Share Posted February 25, 2010 I feel like this is a noobish question, but why do l28et make more torque than hp??? i though it was usually the other way around. Nice numbers tho Have you owned a Honda in the past? Quote Link to comment Share on other sites More sharing options...
S130Z Posted February 25, 2010 Share Posted February 25, 2010 Wish I had seen this before I sent you a PM. By the way, I am running a Failpro head gasket on 15psi with ARP head bolts. Tomorrow I will try and scan my dyno sheet and post it up, numbers were 290hp and 350.4 ftlbs/tq.(I had one run at 297 hp with a few ft/lbs of torque less) What type of Dyno did you run on? Quote Link to comment Share on other sites More sharing options...
letitsnow Posted February 25, 2010 Share Posted February 25, 2010 I feel like this is a noobish question, but why do l28et make more torque than hp??? i though it was usually the other way around. Nice numbers tho HP = TQ*RPM/5252 Looking at the formula, HP is ALWAYS lees than TQ when the RPM is below 5252. When TQ is larger than HP, it just means that it makes the power at a lower RPM. Quote Link to comment Share on other sites More sharing options...
S130Z Posted February 25, 2010 Share Posted February 25, 2010 Here is my dyno graph. Sorry it is so blurry, but torque is 350.4ft/lbs and hp is 290.0hp. This was on 15 psi on a stock rebuilt long block running MS-II and a GT30 .63a/r turbine and .70a/r compressor w/ stage 3 wheels. Quote Link to comment Share on other sites More sharing options...
dhughes Posted February 25, 2010 Share Posted February 25, 2010 dhughes, on 24 February 2010 - 06:53 PM, said:I feel like this is a noobish question, but why do l28et make more torque than hp??? i though it was usually the other way around. Nice numbers tho Have you owned a Honda in the past? 97' camery is close to a honda lol Quote Link to comment Share on other sites More sharing options...
jc052685 Posted February 25, 2010 Author Share Posted February 25, 2010 Hate to say it but.......make you own thread if you wana discuse the L28's HP/TQ relationship. Thanks Quote Link to comment Share on other sites More sharing options...
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