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Author Topic: B17 GS-R for boost  (Read 3930 times)

92CXyD

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B17 GS-R for boost
« on: February 05, 2012, 02:29:49 PM »
I have been asked to get order parts for a friend.

He wants to build a low boost B17a, w/ new pistons, forge rods, bearings and gaskets.

Using http://zealautowerks.com/bseries.html and knowing how hard it is find 132mm (b17a length) and 134mm rods are closes I can find for budget.

Looking for the low comp. 81mm vitaras and not finding them.

Found these http://www.ebay.com/itm/YCP-Honda-Civic-B16A-DOHC-Turbo-Pistons-Rings-81-5MM-/180761745361?hash=item2a163d57d1&item=180761745361&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

But they are 0.5mm o/s, what are some other choices are there?

All I can find pistons that will make his engine above 11:1 w/ 134mm rods.  :noel:







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turbohf

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Re: B17 GS-R for boost
« Reply #1 on: February 05, 2012, 03:01:23 PM »
just put a 77.4mm crank in it.

either way its gonna be slow.



on second though.... "LOW BOOST".... why the fuck are you building the motor? just boost it. tune it good. shitty tune is gonna break a forged motor too.
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Dustin  :Jew:
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'Faster, Faster, until the thrill of speed overcomes the fear of death.'

92CXyD

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Re: B17 GS-R for boost
« Reply #2 on: February 05, 2012, 03:15:11 PM »
Quote from: turbohf on February 05, 2012, 03:01:23 PM
just put a 77.4mm crank in it.

either way its gonna be slow.



on second though.... "LOW BOOST".... why the fuck are you building the motor? just boost it. tune it good. shitty tune is gonna break a forged motor too.

It needs a rebuild burning a bit of oil.  :noel:
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ratcityrex

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Re: B17 GS-R for boost
« Reply #3 on: February 05, 2012, 04:38:14 PM »
Buy a ls for the price it would cost to rebuilt the bottom end and slap the head on it.
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snm95ls

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Re: B17 GS-R for boost
« Reply #4 on: February 05, 2012, 07:47:00 PM »
If you want aftermarket rods for a B17, you are gonna have to bend over and take it in the ass from Crower.  They are the only ones who offer an OTS set of rods for that application.  I would imagine that having a set made though just about anybody else is gonna cost more.  I could be wrong.  Either that or use 137 mm center to center rods, and have some semi custom pistons made.

If you are doing a low boost bitch build, then just run the stock stuff.  What the hell is the point in wasting money on forged rods and pistons?
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PhilStubbs

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Re: B17 GS-R for boost
« Reply #5 on: February 05, 2012, 08:08:52 PM »
Quote from: ratcityrex on February 05, 2012, 04:38:14 PM
Buy a ls for the price it would cost to rebuilt the bottom end and slap the head on it.
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turbohf

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Re: B17 GS-R for boost
« Reply #6 on: February 05, 2012, 08:11:17 PM »
if your really wanting to keep the B17 just get some fresh B16/ITR pistons, along with fresh bearings/etc


and/or just swap that shit out...
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Dustin  :Jew:
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2000 Silverado LS 5.3L Reg Cab Short Bed
1966 Chevy II Nova 400 4dr Sedan V8


'Faster, Faster, until the thrill of speed overcomes the fear of death.'

92CXyD

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Re: B17 GS-R for boost
« Reply #7 on: February 05, 2012, 11:37:40 PM »
Quote from: turbohf on February 05, 2012, 08:11:17 PM
if your really wanting to keep the B17 just get some fresh B16/ITR pistons, along with fresh bearings/etc


and/or just swap that shit out...

I'l tell him to either use the spare b16 crank I have laying around, w/ forge 134mm rods and pr3-ish pistons (10.29:1),

Or do a stock crank w/ 134mm rods, and pr4-ish pistons (11:1 comp)

But on either piston type, they are press in and the forge rods are not, so wouldn't have mod the pistons or rods?
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Re: B17 GS-R for boost
« Reply #8 on: February 07, 2012, 11:55:07 AM »
Quote from: SecksyPeePee on February 05, 2012, 08:08:52 PM
Quote from: ratcityrex on February 05, 2012, 04:38:14 PM
Buy a ls for the price it would cost to rebuilt the bottom end and slap the head on it.

RPM is over-rated. He'll have a bunch more torque with an 89mm crank, and can probably sell the b17 for more than what he'll get a B18A/B for. Plus if it's a B18B it's certain to be newer, and milage isn't an issue since it's getting built.

In the end he'll be better off with a B18 bottom end. You're already going to have an oil feed for the turbo, so making an LS/V will be easy enough.
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92CXyD

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Re: B17 GS-R for boost
« Reply #9 on: February 09, 2012, 12:04:17 AM »
Guys can he use oem type pistons with the forge rods?
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HiProfile

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Re: B17 GS-R for boost
« Reply #10 on: February 09, 2012, 12:30:41 PM »
W/o extra work NO. If he rebushes the rods to press fit or machines the rods for clips it would work.

The real question is WHY. The piston [ringlands] are the wealer link. If he wants to avoid forged piston cost, have him get some NPR pistons for a GSR or LS. With stock everything & 3-layer HG, GSR = 9.5:1, LS = 9:1. Add a full point if he uses a B18A/B block.
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they mspainted dildoes in my mom'#039#039s hand, in a picture of her in a hospital bed. -JD
dem gurls need some boobz! -Engloid

DasPoop

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Re: B17 GS-R for boost
« Reply #11 on: February 09, 2012, 07:34:49 PM »
i would just hang ls pistons on stock rods and use arp fasteners lower comp cheap and will take plenty of power.
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turbohf

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Re: B17 GS-R for boost
« Reply #12 on: February 12, 2012, 04:35:58 PM »
PR4 pistons dont have big enough valve relieves for BVTEC valves...


learn to tune/find a good tuner.
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Dustin  :Jew:
1987 Buick Regal Limited 6.0L/4L80E (LQ4, 862 heads, tbss intake, 92mm tb, e1841p cam, Holley EFI)
2000 Silverado LS 5.3L Reg Cab Short Bed
1966 Chevy II Nova 400 4dr Sedan V8


'Faster, Faster, until the thrill of speed overcomes the fear of death.'

Tim

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Re: B17 GS-R for boost
« Reply #13 on: February 14, 2012, 08:17:59 AM »
Quote from: turbohf on February 12, 2012, 04:35:58 PM
PR4 pistons dont have big enough valve relieves for BVTEC valves...


learn to tune/find a good tuner.
Seriously?
Ive been driving around in my b18a with b16 head for a couple hundred miles breaking it in. That would be shitty if I need to pull it all back apart.
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turbohf

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Re: B17 GS-R for boost
« Reply #14 on: February 15, 2012, 12:48:36 AM »
Quote from: Tim on February 14, 2012, 08:17:59 AM
Quote from: turbohf on February 12, 2012, 04:35:58 PM
PR4 pistons dont have big enough valve relieves for BVTEC valves...


learn to tune/find a good tuner.
Seriously?
Ive been driving around in my b18a with b16 head for a couple hundred miles breaking it in. That would be shitty if I need to pull it all back apart.

yes. non-VTEC has 28mm intake valves, BVTEC has 32mm. i have seen several PR4 and forged copies with light tap marks from the intake valves.
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Dustin  :Jew:
1987 Buick Regal Limited 6.0L/4L80E (LQ4, 862 heads, tbss intake, 92mm tb, e1841p cam, Holley EFI)
2000 Silverado LS 5.3L Reg Cab Short Bed
1966 Chevy II Nova 400 4dr Sedan V8


'Faster, Faster, until the thrill of speed overcomes the fear of death.'

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Re: B17 GS-R for boost
« Reply #15 on: February 15, 2012, 01:47:50 PM »
A dremel will do the reliefs wonders since the pistons will be out. Mix in a cheap syringe marked in CC's and a chunk of flat plastic/plexi and you're set. You don't have to get exact numbers, just make sure all pistons change by the same CC amount.
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they mspainted dildoes in my mom'#039#039s hand, in a picture of her in a hospital bed. -JD
dem gurls need some boobz! -Engloid
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