b18c1 300-350hp suggestions
#1
b18c1 300-350hp suggestions
so this is what im thinking so far
eagle rods
wiseco 9:1 pistons
stock gsr crank
walbro 255 fuel pump
550cc injectors
t3/t4 preferably .63A/R
s300
arp head studs
new head gasket
and tune obviously
i already have a full MSD ignition system and ITR cams with stock retainers and springs
i was wondering if getting a new (large plenum short runners) IM will help that much over my stock gsr?
new fuel rail and/or new fuel lines?
stick with ITR cams i dont think theyre too aggressive of a cam for my build cause i know alot of people run GSR cams?
im rebuilding a blown dsm right now to sell to afford all this so this isnt going to start happening for a little bit im just trying to get everything i want squared away before i start dumping money into it
eagle rods
wiseco 9:1 pistons
stock gsr crank
walbro 255 fuel pump
550cc injectors
t3/t4 preferably .63A/R
s300
arp head studs
new head gasket
and tune obviously
i already have a full MSD ignition system and ITR cams with stock retainers and springs
i was wondering if getting a new (large plenum short runners) IM will help that much over my stock gsr?
new fuel rail and/or new fuel lines?
stick with ITR cams i dont think theyre too aggressive of a cam for my build cause i know alot of people run GSR cams?
im rebuilding a blown dsm right now to sell to afford all this so this isnt going to start happening for a little bit im just trying to get everything i want squared away before i start dumping money into it
#2
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Re: b18c1 300-350hp suggestions
Stock IM is more than enough
T3/T4 (though a very General term, I get it) that's enough.
You state nothing of injectors. Please use 440cc +
Otherwise, unless you need to do mechanical maintanence on the ca, Headgasket and studs aren't necessary either.
Mix, stir, enjoy.
T3/T4 (though a very General term, I get it) that's enough.
You state nothing of injectors. Please use 440cc +
Otherwise, unless you need to do mechanical maintanence on the ca, Headgasket and studs aren't necessary either.
Mix, stir, enjoy.
#5
Honda-Tech Member
Re: b18c1 300-350hp suggestions
why would you choose such low compression?
as for the R cams, just buy the correct springs from acura. you can re use your seats and retainers. technically you can move your intake GSR springs to the exhaust and just buy R intakes but i would replace both sides. springs from 199x that are inexpensive to replace really should be during a rebuild
as for the R cams, just buy the correct springs from acura. you can re use your seats and retainers. technically you can move your intake GSR springs to the exhaust and just buy R intakes but i would replace both sides. springs from 199x that are inexpensive to replace really should be during a rebuild
#6
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Re: b18c1 300-350hp suggestions
Do you have the engine disassembled or is it in the car? For me that would determine a lot of next step decisions. If it's in the car you can always boost as is, that is as long as there aren't any leaks or issues. Run it till something happens then rebuild as needed.
The idea is to keep it simple. Only spend money were it is needed.
For example, I'd ditch the MSD ignition and spend that money elsewhere. The stock ignition is more than adequate.
I'd also stick with GSR cams. The ITR/CTR will yield better numbers but again not necessary for your HP goal.
If the engine was out of the car I'd probably do pistons, rods, and headstuds as my "upgrade" parts. I'd maybe consider springs and retainers for extra "insurance," but still with GSR cams. This is also under the assumption that I'd get bored with 350WHP and would look for a little more in the future. Those upgrades would allow me some wiggle room for maybe 400-450WHP later.
The idea is to keep it simple. Only spend money were it is needed.
For example, I'd ditch the MSD ignition and spend that money elsewhere. The stock ignition is more than adequate.
I'd also stick with GSR cams. The ITR/CTR will yield better numbers but again not necessary for your HP goal.
If the engine was out of the car I'd probably do pistons, rods, and headstuds as my "upgrade" parts. I'd maybe consider springs and retainers for extra "insurance," but still with GSR cams. This is also under the assumption that I'd get bored with 350WHP and would look for a little more in the future. Those upgrades would allow me some wiggle room for maybe 400-450WHP later.
Last edited by mechanix619; 02-24-2012 at 10:38 AM. Reason: edit
#7
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iTrader: (14)
Re: b18c1 300-350hp suggestions
Do you have the engine disassembled or is it in the car? For me that would determine a lot of next step decisions. If it's in the car you can always boost as is, that is as long as there aren't any leaks or issues. Run it till something happens then rebuild as needed.
The idea is to keep it simple. Only spend money were it is needed.
For example, I'd ditch the MSD ignition and spend that money elsewhere. The stock ignition is more than adequate.
I'd also stick with GSR cams. The ITR/CTR will yield better numbers but again not necessary for your HP goal.
If the engine was out of the car I'd probably do pistons, rods, and headstuds as my "upgrade" parts. I'd maybe consider springs and retainers for extra "insurance," but still with GSR cams. This is also under the assumption that I'd get bored with 350WHP and would look for a little more in the future. Those upgrades would allow me some wiggle room for maybe 400-450WHP later.
The idea is to keep it simple. Only spend money were it is needed.
For example, I'd ditch the MSD ignition and spend that money elsewhere. The stock ignition is more than adequate.
I'd also stick with GSR cams. The ITR/CTR will yield better numbers but again not necessary for your HP goal.
If the engine was out of the car I'd probably do pistons, rods, and headstuds as my "upgrade" parts. I'd maybe consider springs and retainers for extra "insurance," but still with GSR cams. This is also under the assumption that I'd get bored with 350WHP and would look for a little more in the future. Those upgrades would allow me some wiggle room for maybe 400-450WHP later.
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#8
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Re: b18c1 300-350hp suggestions
Do you have the engine disassembled or is it in the car? For me that would determine a lot of next step decisions. If it's in the car you can always boost as is, that is as long as there aren't any leaks or issues. Run it till something happens then rebuild as needed.
The idea is to keep it simple. Only spend money were it is needed.
For example, I'd ditch the MSD ignition and spend that money elsewhere. The stock ignition is more than adequate.
I'd also stick with GSR cams. The ITR/CTR will yield better numbers but again not necessary for your HP goal.
If the engine was out of the car I'd probably do pistons, rods, and headstuds as my "upgrade" parts. I'd maybe consider springs and retainers for extra "insurance," but still with GSR cams. This is also under the assumption that I'd get bored with 350WHP and would look for a little more in the future. Those upgrades would allow me some wiggle room for maybe 400-450WHP later.
The idea is to keep it simple. Only spend money were it is needed.
For example, I'd ditch the MSD ignition and spend that money elsewhere. The stock ignition is more than adequate.
I'd also stick with GSR cams. The ITR/CTR will yield better numbers but again not necessary for your HP goal.
If the engine was out of the car I'd probably do pistons, rods, and headstuds as my "upgrade" parts. I'd maybe consider springs and retainers for extra "insurance," but still with GSR cams. This is also under the assumption that I'd get bored with 350WHP and would look for a little more in the future. Those upgrades would allow me some wiggle room for maybe 400-450WHP later.
#9
Honda-Tech Member
Re: b18c1 300-350hp suggestions
if you're starting from scratch plan the whole build around a realistic hp goal. if you like to tinker, drag race and enjoy max power the build will be totally different than a road racer or someone seeking maximum reliability.
also decide if it will be pump or e85. if big numbers are a goal i highly suggest designing around e85 from the get go.
also decide if it will be pump or e85. if big numbers are a goal i highly suggest designing around e85 from the get go.
#11
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Re: b18c1 300-350hp suggestions
Ditch the MSD. For boost you could remove the secondary butterflies in the GSR manifold. Why are you building the bottom end, and hardly touching the head? You don't need a fuel rail or lines.
#12
Re: b18c1 300-350hp suggestions
im sticking with 93 octane and its going to be driven weekly
the itr cams and msd ignition are already in the car (came with the motor)
right now its a daily I/H/E type r cams and msd ignition
im pretty sure i have a small head gasket leak so i have to replace that and its literary like three more bolts and the oil pan (and obviously rod bolts) to tear the motor apart so thats why im spending the time to do rods and pistons
and also the fact that im going to drive it so often i want it reliable
and for the low compression reason its for a reliable build i can still meet my 300-350hp goal on 9:1 compared to the gsr 10:1
and yes i was wondering about the valve spring issue and thanks thats probably what ill do
and idk if i want to go threw the trouble of removing the secondary butterflies in the IM they open at 4300 i think which shouldnt be a problem
the itr cams and msd ignition are already in the car (came with the motor)
right now its a daily I/H/E type r cams and msd ignition
im pretty sure i have a small head gasket leak so i have to replace that and its literary like three more bolts and the oil pan (and obviously rod bolts) to tear the motor apart so thats why im spending the time to do rods and pistons
and also the fact that im going to drive it so often i want it reliable
and for the low compression reason its for a reliable build i can still meet my 300-350hp goal on 9:1 compared to the gsr 10:1
and yes i was wondering about the valve spring issue and thanks thats probably what ill do
and idk if i want to go threw the trouble of removing the secondary butterflies in the IM they open at 4300 i think which shouldnt be a problem
#13
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Re: b18c1 300-350hp suggestions
For 300-350whp, changing out the butterflies isn't needed. Its only when you start upgrading even from what you plan on doing would it need to be a concern.
You're fine with your MSD if its already in there. If it ain't broke, don't fix it.
You're fine with your MSD if its already in there. If it ain't broke, don't fix it.
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Re: b18c1 300-350hp suggestions
Hope you weren't thinkimg about just throwing the forged pistons in without pulling the block. Block will have to be machined for proper piston to wall clearance. Forged pistons expand. If you need a headgasket jist pull the head and go with Arp headstuds. As long as the rest of the motor is healthy then 300 on a stock gsr is pretty easy. Ppl have pushed them a lot further then that. Tuner near me took his daily LS to 383 whp if i remember right bone stock. It's his daily.
#20
Re: b18c1 300-350hp suggestions
i was planning on honing the block but do i really need to get it balanced?
and if i use std 81mm bore pistons would i still really need to get the block machined?
and if i use std 81mm bore pistons would i still really need to get the block machined?
#21
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Re: b18c1 300-350hp suggestions
when you change the weight of the rotating assembly you should rebalance. think about how high these engines spin. being off 10 grams would be a disaster
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Re: b18c1 300-350hp suggestions
You can't just pull stock cast pistons out, hone, and slap forged pistons in. The cylinders will have to be bored to get the proper clearance because forged pistoms expand. In fact the clearances vary depending on which brand your using.
#24
Honda-Tech Member
Re: b18c1 300-350hp suggestions
^^^agreed 100 percent. you are way overthinking this, turbo, injectors, tune and enjoy, 57 trim is a great size turbo up to about 430 hp and your stock motor is fine for boost i would not even touch the pistons or lower the compression for that matter, if you have to do the headgasket anyway then i would do arp studs with oem/ge gasket just cuz u have it off already.
#25
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Re: b18c1 300-350hp suggestions
^^^agreed 100 percent. you are way overthinking this, turbo, injectors, tune and enjoy, 57 trim is a great size turbo up to about 430 hp and your stock motor is fine for boost i would not even touch the pistons or lower the compression for that matter, if you have to do the headgasket anyway then i would do arp studs with oem/ge gasket just cuz u have it off already.