I was considerin puttin in an LS crank in my c1 and I have some questions cuz I am very uneducated on it, BTW I did a search....

1.Power gains?
2.Reliability?
3.Cost?

I plan on Puttin on a JRSC soon so how would it run with an LS crank?

 

1.Power gains? Don't count on it. You're changing the stroke of the engine, and not necissarily for the better. It's a shorter stroke, so, it's not going to handle 8k rpm like the GSR crank will. Also, the length of the GSR and LS rods are different.

2.Reliability? Most internal mods sacrafice reliability, but most can usually be made up.

3.Cost? Not worth it for you to do if you ask me.

 

you mean its a longer stroke.

If you change the crankshaft to an LS one, what you will have is almost a LS/VTEC, but with a gsr block. You will have to use LS rods for this configuration. The advantage of this over an LS/VTEC is that u will have oil squirters like the gsr does and will have a stock crank girdle which the LS blocks lack. Power gains will be comparable to an LS/VTEC. Regarding reliability issues.. its all up to how well u rebuild it, same thing that goes for LS/VTEC

 

you will see great HP gains
torque as well as hp will be increased
compression will be bumped by.2

my lsvtec with a compression of 11.3 made 186whp and 146 tq
your not going to see a 1.8l gsr crank making 146 wtq

you will have to use the ls rods with the ls crank. i sugest you get arp rod bolts and notch the rods to fit gsr/itr rodbearings

you will basically have a lsvtec with the stock oil squirters and block girdle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ScreaminTeg &raquo;</TD></TR><TR><TD CLASS="quote">...It's a shorter stroke...</TD></TR></TABLE>

It's a longer stroke.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ScreaminTeg &raquo;</TD></TR><TR><TD CLASS="quote">...it's not going to handle 8k rpm like the GSR crank will...</TD></TR></TABLE>

It can be done. I recall reading about a project car in a magazine about it. This is sort of working backwards to an LS/VTEC.

I agree with the rest though.

You've already got the VTEC head, might as well keep the other parts that are made for it if you want reliability. If you want a little more torque just add a little boost.

 

you'll have a b20 with 81mm bore...so tourqe is gauranteed...but personally I'd stick with the gsr crank...

 

LS crank in a GSR block would be a great mod. The GSR block is built for high RPM with a crank girdle and oil squirters which is definately adequate enough to run a LS crank to 8k. This i believe is the safest way to run a LS/VTEC. of course most people don't do this cuz it is more expensive then just running a LS block.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EF-EF &raquo;</TD></TR><TR><TD CLASS="quote">
you'll have a b20 with 81mm bore...so tourqe is gauranteed...but personally I'd stick with the gsr crank...
</TD></TR></TABLE>
^^^^lol thats funny....honestly i dont think it would be worth it to spend all that money for a little more torque with less revability... i think you should throw a turbo on there and run like 6 pounds....youll have way better gains and less work would be involved

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by riceball777 &raquo;</TD></TR><TR><TD CLASS="quote">you will see great HP gains
torque as well as hp will be increased
compression will be bumped by.2

my lsvtec with a compression of 11.3 made 186whp and 146 tq
your not going to see a 1.8l gsr crank making 146 wtq

you will have to use the ls rods with the ls crank. i sugest you get arp rod bolts and notch the rods to fit gsr/itr rodbearings

you will basically have a lsvtec with the stock oil squirters and block girdle.</TD></TR></TABLE>sounds good, but how bout cost and reliability? Also keep in mind ill be boostin... with JRSC

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97 GSR &raquo;</TD></TR><TR><TD CLASS="quote">sounds good, but how bout cost and reliability? Also keep in mind ill be boostin... with JRSC </TD></TR></TABLE>
if the engine is built right with everything measureing well with in spec then this will be just as reliabile as a stock gsr. the bigger stroke does put more stress on the rods and cilindar walls but the weakest link is the stock rod bolts. if you get arps then your really fine for well past 8k rpm

 

by the time you dissasemble it rework the rods and get other machining done you would be better of getting forged pistons and rods. the resizing that might be necessary for the rods and arp bolts might be expensive. why chance a rod problem or melting a piston when for a few hundred more you can have a solid bottom end. arp bolts arent cheap either and you can get aftermarket forged rods at spark racing for around 200 dollars

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by riceball777 &raquo;</TD></TR><TR><TD CLASS="quote">you will see great HP gains
torque as well as hp will be increased
compression will be bumped by.2

my lsvtec with a compression of 11.3 made 186whp and 146 tq
your not going to see a 1.8l gsr crank making 146 wtq

you will have to use the ls rods with the ls crank. i sugest you get arp rod bolts and notch the rods to fit gsr/itr rodbearings

you will basically have a lsvtec with the stock oil squirters and block girdle.</TD></TR></TABLE>

Why would you suggest GSR/ITR rod bearings over the LS bearings?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Takumi Fujiwara &raquo;</TD></TR><TR><TD CLASS="quote">

Why would you suggest GSR/ITR rod bearings over the LS bearings?</TD></TR></TABLE>
gsr/itr rod bearing have a special coating on them
they are also not as wide as ls.b16 rod bearings so the stock notch on the ls rods will not work for the gsr/itr rodbearings so the rods need to be notched on the other side to fit gsr/itr rod bearings

 

How about if I were to use aftermarket bearings? I assume you're referring to OEM bearings with the coating.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mingbling96 &raquo;</TD></TR><TR><TD CLASS="quote">you mean its a longer stroke. </TD></TR></TABLE>

doh! that's what I meant to type!

 

acl makes nice main bearings they are sylicone injected like the oem type r bearings. a balanced ls crank is very strong, any honda crank for that matter. look at skunk2s 300 hp N/A b16, it uses a stock crank and stock rods. ls rods are also strong, im sure you have heard different because so have i. but actually the down fall of the ls rods are in fact not the rods but the rod bolts. thats why if building an ls vtec you always want to upgrade to arp and ect.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by riceball777 &raquo;</TD></TR><TR><TD CLASS="quote">
if the engine is built right with everything measureing well with in spec then this will be just as reliabile as a stock gsr. the bigger stroke does put more stress on the rods and cilindar walls but the weakest link is the stock rod bolts. if you get arps then your really fine for well past 8k rpm</TD></TR></TABLE>Thanks for all your help guys... The one and major concern I have is my B18 is a virgin when it comes to mods, It is in PERFECT condition at 65K and oil changes EVERY 3000 miles of its life... Youd be hard pressed to find another 65K b18 as well taken care of as mine... I hear mixed answers when it comes to reliability about the LS crank.. also that it cant handle 8,000 rpm...??

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EF-EF &raquo;</TD></TR><TR><TD CLASS="quote">you'll have a b20 with 81mm bore...so tourqe is gauranteed...but personally I'd stick with the gsr crank...</TD></TR></TABLE> So an LS crank automatically makes me a b20?? And why would you stick with the gsr crank?

BTW everyone I have $1500 cash right now and I am gettin an incredible job soon thats gonna pay literally thousands every week, What I really want is to put in an LS crank now and get that added low end torque and in a couple months boost with a JRSC and really get some pull in my GSR.... I really need things to work reliably cuz I plan on havin my gsr for a long time and possibly race in the scca when I get a little older, just tell me what is needed to make it reliable with boost in mind.... if It cant be done reliably than I will just stick with the stock crank

 

i to will be doing this swap soon, i can get a 98 ls block for 200.00 from my girlfriends work, i have a b18c1 in my eg cx hatch with shitty ls tranny, want more power lookin need more torque hopefully the ls internals in my b18c1 will give me that extra bump, still lookin for b16 tranny

 

sounds like to me that you have some money and you want more power out of your car
then the best bet is just to go turbo
na can only do so much espically in a small displacement NA
you will never be happy with the power and the torque on all motor even if you swap out a lscrank and build the motor
also the fact that we drive heavy integra's dont really help if you want to go all motor

trust me i went all motor and its the biggest regret of my life. so when if you can makes about 200whp that still going to be slow in an integra and still is unmatched with the power and fun of a boosted honda

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by riceball777 &raquo;</TD></TR><TR><TD CLASS="quote">sounds like to me that you have some money and you want more power out of your car
then the best bet is just to go turbo
na can only do so much espically in a small displacement NA
you will never be happy with the power and the torque on all motor even if you swap out a lscrank and build the motor
also the fact that we drive heavy integra's dont really help if you want to go all motor

trust me i went all motor and its the biggest regret of my life. so when if you can makes about 200whp that still going to be slow in an integra and still is unmatched with the power and fun of a boosted honda </TD></TR></TABLE>Im not sure if you read right but im gonna get a JRSC... I dont know ill prolly just stick with the stock crank for safety reasons...

 

i've done this mod with a buddy of mine. the new motor is a monster. don't know what compression is...don't know how much power it made because we sold it a couple thousand miles later since that was the plan.

the LS crank and rods will not have a problem revving to 8k. yes there is slightly more stress on the rods but running it to 8k will be fine. if you're worried and want your motor to be completely reliable, do what we did, get some eagle rods.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shermanyang &raquo;</TD></TR><TR><TD CLASS="quote">i've done this mod with a buddy of mine. the new motor is a monster. don't know what compression is...don't know how much power it made because we sold it a couple thousand miles later since that was the plan.

the LS crank and rods will not have a problem revving to 8k. yes there is slightly more stress on the rods but running it to 8k will be fine. if you're worried and want your motor to be completely reliable, do what we did, get some eagle rods.</TD></TR></TABLE>That sounds good to me... And how much boost can this setup handle?

 

basically what i get out of this is youre gonna have lots of money to spend on your motor, so why not just go gsr turbo? build it right and youll have more power than youll need or ever use for that matter...why do all this work for a few extra ft/lbs of torque when you can boost more? oh yeah and JRSC's suck, thier customer service sucks and you wont get as much power for your money thats for damn sure to JRSCs

 

or if your intent on a bigger stroke do it right and buy an aftermarket crank 92 mm should really bring up the torque.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97 GSR &raquo;</TD></TR><TR><TD CLASS="quote">That sounds good to me... And how much boost can this setup handle?</TD></TR></TABLE>

not sure how much whp this setup will promise, but i'm sure it'll hold the the same hp as a regular b18c1. we never boosted the motor we built.