LSvtec OR B20vtec
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Re: LSvtec OR B20vtec (dynastix9)
LS/VTEC is the way to go! (more reliable cause the LS's block's sleves are more durable) but if your getting a B20 block sleved your good to go
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Re: LSvtec OR B20vtec (b18bme)
i like the CRVtec cuz it sounds better. just kiddin, with a b16 head and b20 block you can put numbers down like the c5....or atleast somewhere close. but which ever motor you build your goin to have to get the gsr crank or itr crank to better suit the high rpms. the b1 and b20 cranks arent made for 8k on the tach. thats if youre going to be beatin it hard alot. but i would definitely get a better crank...
justin
justin
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#10
Re: LSvtec OR B20vtec (nohondayet)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nohondayet »</TD></TR><TR><TD CLASS="quote"> but which ever motor you build your goin to have to get the gsr crank or itr crank to better suit the high rpms. </TD></TR></TABLE>
I thought that the idea behind a LSVTEC was to take advatage of the longer LS stroke. And second you can build and balance a LS to spin to 8500 rpm no problems.
I thought that the idea behind a LSVTEC was to take advatage of the longer LS stroke. And second you can build and balance a LS to spin to 8500 rpm no problems.
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Re: LSvtec OR B20vtec (spoonfed95)
Ya thats right, one a LS bottom end, you want to use your LS crank, and connecting rods.
And I think everyone has mistaken his question, he is asking stock, not doing any mods, so re-sleeving , cranks shouldnt even be coming up.
And I think everyone has mistaken his question, he is asking stock, not doing any mods, so re-sleeving , cranks shouldnt even be coming up.
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Re: LSvtec OR B20vtec (solk1dd)
Very interested in doing one of those swaps myself. I can't decide which one to do. I have been reading about the two for a while now. I can get a 95 B18B clean long bolck for 625 or an 01' B20z with 15k for 1000, so I am trying to decide.
Didn't mean to hijack the thread.
Didn't mean to hijack the thread.
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Re: LSvtec OR B20vtec (Pete_SI)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pete_SI »</TD></TR><TR><TD CLASS="quote">What would be the connecting rods to use with a CRVtec with a GSR crank.</TD></TR></TABLE>
...use crower conrods and a gsr crank, or the same rods and an eagle crank. might be a bit expensive but youll be able to rev out really high with out prob like you would have with the stock components. if you rev out too high on stocvk rods then the strech from the rods will hit the head and you dont want that. just dont use stock ones, thats all i have to say. if you stay with stock just dont keep the revs down, or dont beat the thing too hard. if you run it hard alot thats when those prbs i mentioned comeup. but if you wanna stay stock that bad then do it, but i wouldnt...but thats just me
thanx
justin
...use crower conrods and a gsr crank, or the same rods and an eagle crank. might be a bit expensive but youll be able to rev out really high with out prob like you would have with the stock components. if you rev out too high on stocvk rods then the strech from the rods will hit the head and you dont want that. just dont use stock ones, thats all i have to say. if you stay with stock just dont keep the revs down, or dont beat the thing too hard. if you run it hard alot thats when those prbs i mentioned comeup. but if you wanna stay stock that bad then do it, but i wouldnt...but thats just me
thanx
justin
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Re: LSvtec OR B20vtec (nohondayet)
No you can use your stock rod, just ge the machine shop to shot peen them, and use ARP Rod bolts to hold them together. Many engine builders with high horse power engines use stock rod, there are no problems with them, as long as done right!
#19
b20vtec is the best hybrid motor ever created(in my opinion). You can rev a stock b20 crank to 8k without any problems. I'd get a vtec oil pump though. The c5 doesn't come close to the torque or horsepower the b20 makes.
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Re: LSvtec OR B20vtec (solk1dd)
I do like LS/Vtec actually think I am going to do that since I have an LS already. But, I think stock to stock and mod to mod that the B20 Vtec will make more power and tq then a ls/vtec.
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Re: LSvtec OR B20vtec (TurboTony)
someone posted it earler.
stock for stock=b20b or b20z
mod for mod =ls
ask me why. first of all im not a bseries fan. if i was a fan of trends i would want to spend the least amount of money possible.
for the price of a b20longblock(800) you can pick up a b16 longblock(600) and a ls shorblock(200) and have your self a stock b20 or an ls vtec with 11.0 compression.
b20vtec.com is a site i have visited before. even this site will mention that the stock b20 sleeves dont like alot of boost or really high compression.
besides all a b20 is, is an ls with 84mm pistons.
stock for stock=b20b or b20z
mod for mod =ls
ask me why. first of all im not a bseries fan. if i was a fan of trends i would want to spend the least amount of money possible.
for the price of a b20longblock(800) you can pick up a b16 longblock(600) and a ls shorblock(200) and have your self a stock b20 or an ls vtec with 11.0 compression.
b20vtec.com is a site i have visited before. even this site will mention that the stock b20 sleeves dont like alot of boost or really high compression.
besides all a b20 is, is an ls with 84mm pistons.
#25
Re: LSvtec OR B20vtec (solk1dd)
probably gonna get flamed but here it goes.
magazines write alot of good sounding stuff related to this along with people who all into trends of what sound good. I have built 2 b20vtec, i never dyno'd either. my experience building engines is very extensive ( in comparison to a home hobbist). and im building a 3rd b20vect currently.
the first two engines used exactly the same parts with the exception of the pistons and ECU
*je pistons 12.5 and 9.5
*eagle rods
*ported gsr head with crower "stage 2" cams
*z10 racing oil pump gears I bought a new oiil pump housing but can remember if it was a gsr or a b20 part #
*z 10 racing main gridle brace
*factory b20 crank
*fidanza aluminum flywheel
*clutch net clutch
*holley t body
rc 240cc injectors
the 9.5 engine ran very strong and was very impressive using a gsr stock ecu
the 12.5 engine was a monster! im not kidding or exaggerating it scared the sh*t out of stock mustangs utilizing a hondata ecu(not programmed correctly and thats wasnt hondata fault either). the 9.5 was limited to its redline by way of the stock ecu programming. the 12.5 rev'd to 9k. the 9.5 ran fine, it was sold. the 12.5 threw a rod through the side of the block due to OIL STARVATION not rev "fatigue"
there was no problems with cracks in the cylinders of the 12.5, no signs of cylinder wear from the high revs.
the 3rd b20vtec is a replacement for the 12.5, it will use AEM ecu in a 2000 si. going to larger injectors and will be dyno tuned.
by the way the 12.5 burn rubber in 2 gear at 40mph, and chirped 3rd gear.
so unless i got a magical block stock block can take a lot of torture
hope this help because this isnt speculation ,,,, i built them both.
magazines write alot of good sounding stuff related to this along with people who all into trends of what sound good. I have built 2 b20vtec, i never dyno'd either. my experience building engines is very extensive ( in comparison to a home hobbist). and im building a 3rd b20vect currently.
the first two engines used exactly the same parts with the exception of the pistons and ECU
*je pistons 12.5 and 9.5
*eagle rods
*ported gsr head with crower "stage 2" cams
*z10 racing oil pump gears I bought a new oiil pump housing but can remember if it was a gsr or a b20 part #
*z 10 racing main gridle brace
*factory b20 crank
*fidanza aluminum flywheel
*clutch net clutch
*holley t body
rc 240cc injectors
the 9.5 engine ran very strong and was very impressive using a gsr stock ecu
the 12.5 engine was a monster! im not kidding or exaggerating it scared the sh*t out of stock mustangs utilizing a hondata ecu(not programmed correctly and thats wasnt hondata fault either). the 9.5 was limited to its redline by way of the stock ecu programming. the 12.5 rev'd to 9k. the 9.5 ran fine, it was sold. the 12.5 threw a rod through the side of the block due to OIL STARVATION not rev "fatigue"
there was no problems with cracks in the cylinders of the 12.5, no signs of cylinder wear from the high revs.
the 3rd b20vtec is a replacement for the 12.5, it will use AEM ecu in a 2000 si. going to larger injectors and will be dyno tuned.
by the way the 12.5 burn rubber in 2 gear at 40mph, and chirped 3rd gear.
so unless i got a magical block stock block can take a lot of torture
hope this help because this isnt speculation ,,,, i built them both.