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JDM-JAMES · 02-06-2008, 01:52 AM

Hey im building a ls/vtec b18a1 block stock internals with a b17 gsr head with type r cams i was wondering if i would have enough piston to valve clearance with this setup one more question i have is if i put p61(b17) pistons in the ls would i have more piston to valve clearance and more compression? and last but not least how hard is it to punch out the wrist pins or is it not possable in my own garage.

K2e2vin · 02-06-2008, 02:12 AM

Yes, you should have enough clearance.

The B17 pistons will definitely increase compression but clearance will be a little closer. It should still work fine though as there are people using B16 pistons, which have larger domes, in LS-block setups with no problems. You can always clay it to make sure there's no contact with the piston and head/valves.

The wrist-pins can't be "punched out" so to say. They're pressed in with a press, and need to be pressed out. Honda uses a special tool(used in conjunction with the press) that prevents damage to the piston. If you have a +5ton press, you can still do it in your garage. I was able to press mine out at a shop with a press by using a assortment of different sockets(not recommended!). When I had another shop do a different set of pistons, which did not have the tool, the pistons were messed up.

The tool itself is very hard to find(I believe they only sell it to Honda shops or something). I had asked some shops if they could do it for me but they said they wouldn't press out the pins unless they worked on the block.

JDM-JAMES · 02-06-2008, 03:06 AM

Thanks guess im ready to put this thing together.

K2e2vin · 02-06-2008, 03:18 AM

Go for it dude! Let us know how it goes.

bugley · 03-04-2008, 09:53 PM

itl fit just get a taller hood

JDM-JAMES · 03-05-2008, 12:29 AM

Quote:

Originally Posted by bugley

itl fit just get a taller hood

lol what are you talking about

02-06-2008, 01:52 AM	#1
JDM-JAMES Member Join Date: Nov 2007 Posts: 55 iTrader: 0 / 0% Rep Power: 5	b18a1 With B17 head type r cams piston clearance. Hey im building a ls/vtec b18a1 block stock internals with a b17 gsr head with type r cams i was wondering if i would have enough piston to valve clearance with this setup one more question i have is if i put p61(b17) pistons in the ls would i have more piston to valve clearance and more compression? and last but not least how hard is it to punch out the wrist pins or is it not possable in my own garage.

02-06-2008, 02:12 AM	#2
K2e2vin Senior Member Join Date: Jan 2003 Location: Raleigh, NC Age: 22 Posts: 6,358 iTrader: 2 / 100% Ride: 88 Honda Civic HB Rep Power: 150	Yes, you should have enough clearance. The B17 pistons will definitely increase compression but clearance will be a little closer. It should still work fine though as there are people using B16 pistons, which have larger domes, in LS-block setups with no problems. You can always clay it to make sure there's no contact with the piston and head/valves. The wrist-pins can't be "punched out" so to say. They're pressed in with a press, and need to be pressed out. Honda uses a special tool(used in conjunction with the press) that prevents damage to the piston. If you have a +5ton press, you can still do it in your garage. I was able to press mine out at a shop with a press by using a assortment of different sockets(not recommended!). When I had another shop do a different set of pistons, which did not have the tool, the pistons were messed up. The tool itself is very hard to find(I believe they only sell it to Honda shops or something). I had asked some shops if they could do it for me but they said they wouldn't press out the pins unless they worked on the block. __________________ 1988 Honda Civic Standard-more mods than I want to list 1992 Honda Accord LX 1996 Toyota Avalon-Spun bearing, for sale. Terrorists have successfully attacked our imagination. RIP Jon Eban Nie, August 31, 1991 - May 7, 2006 Y-Daniel Siu Eban, September 7, 1986 - May 7, 2006

02-06-2008, 03:18 AM	#4
K2e2vin Senior Member Join Date: Jan 2003 Location: Raleigh, NC Age: 22 Posts: 6,358 iTrader: 2 / 100% Ride: 88 Honda Civic HB Rep Power: 150	Go for it dude! Let us know how it goes. __________________ 1988 Honda Civic Standard-more mods than I want to list 1992 Honda Accord LX 1996 Toyota Avalon-Spun bearing, for sale. Terrorists have successfully attacked our imagination. RIP Jon Eban Nie, August 31, 1991 - May 7, 2006 Y-Daniel Siu Eban, September 7, 1986 - May 7, 2006

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02-06-2008, 03:06 AM	#3
JDM-JAMES Member Join Date: Nov 2007 Posts: 55 iTrader: 0 / 0% Rep Power: 5	Thanks guess im ready to put this thing together.

03-04-2008, 09:53 PM	#5
bugley FAST Join Date: Mar 2008 Location: RIC Posts: 1 iTrader: 0 / 0% Ride: 97 civic dx Rep Power: 0	itl fit just get a taller hood

Hondaswap.com | Honda Technical & JDM styling Forums

b18a1 With B17 head type r cams piston clearance.