WOW CRAPPY DAY GSR BUILD GONE WRONG LS/CRANK
So as some of you know I am building a GSR bought what was supposed to be 81.50mm fresh tanked & bored bare block with main caps girdle & oil pan as well as GSR h-beam eagle rods. Well 1st prob got home put my 81.50mm cp slugs & they floated in there ... hmm grabbed my micrometer & sure enough 82.00mm. So I contact dude and he swore up & down that I was wrong, so I drove back to his pad to prove to him, that its not what he claimed. So he gave me the RS machine itr spec 1.00mm over stamped pistons, which were what the block was bored to. he assumed they were 81.50mm because of the box they were in, I used to sell Wiseco,JE,Vertex etc Whatever is stamped on top of piston is what size above stock is if a STD stamp isnt there I explained to him & was like here u can have the RS machines 3 only & no rings. Anyways emailed CP that night & wow quick respose I had no receipt or anything just said Ive always ran & sold there products & asked if it was possible to swap my 81.50mm for 82.00mm thank God the gentleman said yes next morning drove to timbuktu Irvine Ca from the I.E. where I stay & they swapped em out cool problem solved ... so I thought. So I had the supposed GSR crank cut.010 / .25 mm & balanced to gsr eagle rods dude supplied me as well ad my cp pistons paid around $175 or so. Today started assembling block to find out interesting crank hits oil squirters hmm maybe the oil squirters I ordered from somebody were from b16 so I bent em a lil, put pistons on rods bearings on journals thats wierd the rod block a tad. So after assembling 1 cylinder I realize dude gave me an LS crank which is why squirters hit & GSR rod bearings & journals are narrower & walked back & forth. So the machine work & balance were a wash. Luckily I have NEW h-beam rods for LS crank & a clean un molested LS crank & acl std mains for it all I need is LS rod bearings & im good. So I have an 89mm stroked gsr I believe vs 87.2mm stock but im using GSR spec 11.0.1 cp pistons. Im about to oreder Golden Eagle oil squirter block offs, & bearings. Should I bother balancing the virgin LS crank & LS eagle rods & cps or is this over kill the head is fully built skunk2 tuner springs tuner 2 cams port & polish crower titanium retainers, will my compression raise above 11.0.1 with LS crank/rods with GSR spec pistons, & why didnt the LS crank LS rods gsr pistons stick out of block is it because the gsr piston pin location loweres the dome height ?
Isnt it wierd that my piston is flush with block though ? Oem gasket should be fine right ? & is 91 chevron cool as long as im dyno tunned ? Im gonna be on Hondata S300 car is gonna be trailered to Do It Dyno & Bubba is going to break it in for me on there. Also if im gonna be around 220hp range are my H22 280cc injectors efficent enough ? Only differerece betwen current b18c is that it is not ported & polished JDM 10.6.1 & 81mm Churches tunned it said was fine
No, its not.. its fine..
you'll be fine on pump gas... break it in hard, dont let anyone else tell you otherwise, or you'll be sorry.
you'll be fine on pump gas... break it in hard, dont let anyone else tell you otherwise, or you'll be sorry.
Here in southern Cali theres only a few reputable tuners Churches Bisimoto Do It Dyno I like Bubbas attitude & prices hes willing to talk to you & will give you his time, I want to use him as well because he uses dynojet or mustang or equivalent not dyna pack realistically my cars gonna put down around 215 or so we'll c not bulding a race car just a reliable daily driver street/track/drag worthy.
There isnt enough contact on the LS rod journal when you use gsr rod bearings there is a lot play I know what I need LS rod bearings. Just wondered how my engine is longer stroke yet doesnt stick out of block. The large end of GSR rods is way thinner than LS
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THE PROBLEM IS SOLVED EXPLAINED SITUATION THOUROUGLY IN THREAD LS/CRANK LS/RODS 1st attempt LS crank/GSR rods not intentional the crank was supposed to be GSR turned out to be LS you CANNOT use GSR rods or bearings on an LS crank they will walk back & forth & ruin engine. RULE IS GSR CRANK GSR RODS LS CRANK LS RODS
you could use the gsr bearings on an ls rod, what do i know.. i'll let someone with a higher post count shine in.
oh i forgot.. you won't break 200.. peace.
oh i forgot.. you won't break 200.. peace.
Dude I know my **** dont run your mouth if you dont know what your talking about even if the bearing fits the egdes wont have contact with journal want as much contact to avoid spinning a bearing these are on EAGLE h-beam rods not oem. THE GSR RODS ROCK SIDE TO SIDE LS fit perfect the GSR bearing with LS rod isnt reliable for 220hp + not designed to fit on wider rod journal
with that compression make sure you take it to a real good tuner if your gonna be running 91 octane it can be ran on 91 pump gas but might sacrifice some hp to run safley not much room for error there and if your at 12:1 compression or higher i would run pro 2 cams or something in that range. lets remember its all about dynamic compression ratio which idealy should be between 9:1 and 11:1 with 10:1 to 11:1 range being ran on race fuel so for pump gas you want a 9:1 to 10:1 again this is ideal its not etched in stone lol but for best outcome its a range to go by
with that compression make sure you take it to a real good tuner if your gonna be running 91 octane it can be ran on 91 pump gas but might sacrifice some hp to run safley not much room for error there and if your at 12:1 compression or higher i would run pro 2 cams or something in that range. lets remember its all about dynamic compression ratio which idealy should be between 9:1 and 11:1 with 10:1 to 11:1 range being ran on race fuel so for pump gas you want a 9:1 to 10:1 again this is ideal its not etched in stone lol but for best outcome its a range to go by
try doing the calculations as a ls block if im not mistaken the deck heights are the same so its basically a ls vtec but i could be wrong so dont hold me to it its worth a try. im sure with tuning you will be fine churches is a reputable tuner from what i hear so they will take care of ya no worries
If your not to sure about running that compression just throw in a thicker HG on there, im pretty sure youll be fine. Ever consider e85?
WTF is E85 lol Sounds like BMW chassis Race fuel what would we do with out google lol naw not running race fuel in my daily lol broke as hell
The Gsr bearing thing on LS rods has been done by many over the years because of the better quality of bearing material and potential of reduced friction which should equal a small power gain. They have the LS rods re-tanged to accept the bearings so the fit right. The thing is, aftermarket bearings like ACL, Cleavite, King etc are of a high quality and can be used just as effectively in a build like this, so it's up to you and you're own personal preference.
As far as your build goes and compression numbers etc, the LS rods are nearly 1mm shorter than the GSR rods which helps nullify some of that compression increase from the LS crank. In your engine with those 11:1 GSR pistons, the increased stroke combined with the shorter LS rods will drop your compression down to about 11.2-3:1 on a 3 layer headgasket (stock) which would be fine on 91 pump gas. Those cams you have will still work well on your build but your injectors will be close to, if not maxed more than likely. As far as dyno numbers go...remember people, they are just numbers that are used to determing if a certain combination of parts or tuning is good/bad, working, not working.
As far as your build goes and compression numbers etc, the LS rods are nearly 1mm shorter than the GSR rods which helps nullify some of that compression increase from the LS crank. In your engine with those 11:1 GSR pistons, the increased stroke combined with the shorter LS rods will drop your compression down to about 11.2-3:1 on a 3 layer headgasket (stock) which would be fine on 91 pump gas. Those cams you have will still work well on your build but your injectors will be close to, if not maxed more than likely. As far as dyno numbers go...remember people, they are just numbers that are used to determing if a certain combination of parts or tuning is good/bad, working, not working.
The Gsr bearing thing on LS rods has been done by many over the years because of the better quality of bearing material and potential of reduced friction which should equal a small power gain. They have the LS rods re-tanged to accept the bearings so the fit right. The thing is, aftermarket bearings like ACL, Cleavite, King etc are of a high quality and can be used just as effectively in a build like this, so it's up to you and you're own personal preference.
As far as your build goes and compression numbers etc, the LS rods are nearly 1mm shorter than the GSR rods which helps nullify some of that compression increase from the LS crank. In your engine with those 11:1 GSR pistons, the increased stroke combined with the shorter LS rods will drop your compression down to about 11.2-3:1 on a 3 layer headgasket (stock) which would be fine on 91 pump gas. Those cams you have will still work well on your build but your injectors will be close to, if not maxed more than likely. As far as dyno numbers go...remember people, they are just numbers that are used to determing if a certain combination of parts or tuning is good/bad, working, not working.
As far as your build goes and compression numbers etc, the LS rods are nearly 1mm shorter than the GSR rods which helps nullify some of that compression increase from the LS crank. In your engine with those 11:1 GSR pistons, the increased stroke combined with the shorter LS rods will drop your compression down to about 11.2-3:1 on a 3 layer headgasket (stock) which would be fine on 91 pump gas. Those cams you have will still work well on your build but your injectors will be close to, if not maxed more than likely. As far as dyno numbers go...remember people, they are just numbers that are used to determing if a certain combination of parts or tuning is good/bad, working, not working.
i've broken in all of my engines with a plan, but not hard, and i've had some bottom ends that have lasted longer than some people's stock engines, hehe.
i'm not saying "hard" is not a way to break it in, but it's not the only way enroute to success. i know nathan tasukon in the mid to late '90s would build his high compression sohcs and throw them right on the intertial dyno to get numbers. i mean, with like 10 miles on them. no eddy current dyno to apply different loads, etc. i'm talking a dynojet to redline. but i never felt comfortable with that, went the other way, and had no problems.
Last edited by q16racer; Mar 13, 2011 at 04:54 PM.


