LS Vtec turbo set-up
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Although this has gone supurbly off topic...
DIFFERENCES BETWEEN A B20 AND B18
B20Z and B18B cams are the same! Exact same.
B20B intake cam has a little less lift then B20Z/B18B.
None of the B20s have oil squirters...neither do B18Bs
None of the B20s have block girdles...neither do B18Bs.
The B20B does NOT have a compression of 8.8:1...the compression is 9.2:1
The B20Z has a compression of 9.6:1
B20B/Z uses a GSR(P72) oil pump...B18B uses a B18B(P75) oil pump.
B20Z has a knock sensor...B20B/B18B does not.
B20B/Z does not have "sleeves" like teh B18B/C.
The "sleeves" are all one piece made of some fiber reinforced stuff.
----
The info on the page is old, but apears valid.
Source: http://home.earthlink.net/~pritos/civic/info/info.html
DIFFERENCES BETWEEN A B20 AND B18
B20Z and B18B cams are the same! Exact same.
B20B intake cam has a little less lift then B20Z/B18B.
None of the B20s have oil squirters...neither do B18Bs
None of the B20s have block girdles...neither do B18Bs.
The B20B does NOT have a compression of 8.8:1...the compression is 9.2:1
The B20Z has a compression of 9.6:1
B20B/Z uses a GSR(P72) oil pump...B18B uses a B18B(P75) oil pump.
B20Z has a knock sensor...B20B/B18B does not.
B20B/Z does not have "sleeves" like teh B18B/C.
The "sleeves" are all one piece made of some fiber reinforced stuff.
----
The info on the page is old, but apears valid.
Source: http://home.earthlink.net/~pritos/civic/info/info.html
Honda Tech/ Local AssHole
Joined: May 2003
Posts: 1,662
Likes: 0
I found the artcile I need to scan it Lemme Just type in what it says and ill locate a sanner and scan it in for ya ! its a mini magazine that Hot rods maazine made Its all about Honda 4cyl's
OK heres goes...
B18 and B20 Blocks {left) have about a 3.000-inch higher deck than B16 and B17 Blocks (right). Note the added material (arrows) above the bolt bosses on the B18/B20 casting.
The '86-01 DOHC B series engines have been built in 1.6L, 1.7l, 1.8L,2.0L and 2.1L sizes. The larger engines are generally found in Acura Integras and Honda Preludes, and the B16's came in civic varients. The 1.6L B16A is the most plentiful and popular swap engine a clip goes for about 1800.00 us dollars. There is also a weird Japan-only B16 varient the B16B with a B16 Crank, but with the B18c's rods 138mm/5.43inch compaired to 134mm/5.28inch) and 0.300inch higher deck height. If you subscribe to long rod theory this could be a hot setup for a sustained high rpm engine.
*edit*
The B20 and B21 are the BIG BLOCK of traditional hondas. Used in the US preludes in 88-91 they are more readily available in japan. Cores typicaly cost about 1200.00 us dollars. Unfortunatly the B20 series does not have a VTEC option but can be mated to a VTEC head with minor modifctaions due to it being in the B series family.
*seperate part of article*
Mid-90's and Later B20 series Blocks (left) have an open deck plus a different crank journal size. Early B20 engines (right) have a closed deck. Some honda builders say the closed deck promotes better head gasket sealing, But RS Machine reports no sealing problems with open decks, adding that its easier to install big-bore sleeves in open deck blocks. This information is also true for the Later and ealier versions of the Japan only H series engines.
Honda Engine designation System
B,C,D,F,H,J,K = Engine series
18,16,17,20,21,23,27,30,32 = Displacemetin liters
A,B,C,R,Y,Z = A major variation of the basic seres A is the basic varient, with supsequent letters denoting progressivly higher performance. "c" is often (but not always) a VTEC engine. "R",Y,or Z are ultra High performance nearrace motors
1,2,3 Minor Change,revision,or evolution of a basic varient.
ie. B18C1 GSR
B series
1.8L
VTEC performance
1st generation no revsion
B18C5 same as above BUT 5th varient or 5th revision of te motor extended engine code is B18CR5 Type R Japan only.
This artciel also talks about head varients and Honda DART Blocks
Beefy block with V-8 hp capability with NO machineing ! They come in B18 and B20+ sizes only ! its made from C355-T6 aluminum alloy fullyCNC machined out of one piece of alloy. OE specifications and sizes or in your choice of vaients, they also incorporate Replaceable Ductle-ion dry sleeves. These Press fit cylinder liners offer superior stability for reduced operation fristion and encourageoptimized ring seal.
I also wanna point out that this is a street designed engine !! tehre is way too much to type hopethis makes you guys a lil smarter
OK heres goes...
B18 and B20 Blocks {left) have about a 3.000-inch higher deck than B16 and B17 Blocks (right). Note the added material (arrows) above the bolt bosses on the B18/B20 casting.
The '86-01 DOHC B series engines have been built in 1.6L, 1.7l, 1.8L,2.0L and 2.1L sizes. The larger engines are generally found in Acura Integras and Honda Preludes, and the B16's came in civic varients. The 1.6L B16A is the most plentiful and popular swap engine a clip goes for about 1800.00 us dollars. There is also a weird Japan-only B16 varient the B16B with a B16 Crank, but with the B18c's rods 138mm/5.43inch compaired to 134mm/5.28inch) and 0.300inch higher deck height. If you subscribe to long rod theory this could be a hot setup for a sustained high rpm engine.
*edit*
The B20 and B21 are the BIG BLOCK of traditional hondas. Used in the US preludes in 88-91 they are more readily available in japan. Cores typicaly cost about 1200.00 us dollars. Unfortunatly the B20 series does not have a VTEC option but can be mated to a VTEC head with minor modifctaions due to it being in the B series family.
*seperate part of article*
Mid-90's and Later B20 series Blocks (left) have an open deck plus a different crank journal size. Early B20 engines (right) have a closed deck. Some honda builders say the closed deck promotes better head gasket sealing, But RS Machine reports no sealing problems with open decks, adding that its easier to install big-bore sleeves in open deck blocks. This information is also true for the Later and ealier versions of the Japan only H series engines.
Honda Engine designation System
B,C,D,F,H,J,K = Engine series
18,16,17,20,21,23,27,30,32 = Displacemetin liters
A,B,C,R,Y,Z = A major variation of the basic seres A is the basic varient, with supsequent letters denoting progressivly higher performance. "c" is often (but not always) a VTEC engine. "R",Y,or Z are ultra High performance nearrace motors
1,2,3 Minor Change,revision,or evolution of a basic varient.
ie. B18C1 GSR
B series
1.8L
VTEC performance
1st generation no revsion
B18C5 same as above BUT 5th varient or 5th revision of te motor extended engine code is B18CR5 Type R Japan only.
This artciel also talks about head varients and Honda DART Blocks
Beefy block with V-8 hp capability with NO machineing ! They come in B18 and B20+ sizes only ! its made from C355-T6 aluminum alloy fullyCNC machined out of one piece of alloy. OE specifications and sizes or in your choice of vaients, they also incorporate Replaceable Ductle-ion dry sleeves. These Press fit cylinder liners offer superior stability for reduced operation fristion and encourageoptimized ring seal.
I also wanna point out that this is a street designed engine !! tehre is way too much to type hopethis makes you guys a lil smarter
Honda Tech/ Local AssHole
Joined: May 2003
Posts: 1,662
Likes: 0
Originally posted by Cronic
Although this has gone supurbly off topic...
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Although this has gone supurbly off topic...
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On the contrary this is very viable and usefull information. Someone asked why how and what to build a LS VTEC we are just giving him options as well as knowledgable information for him to use. I think its good we can share this infomation Im learning crap i didnt know. Im a certified Honda technician and even some of this I dont know.
Honda Tech/ Local AssHole
Joined: May 2003
Posts: 1,662
Likes: 0
I also thought this info was neat !! about the 30k mile JDM rule!!
JDM Engines
Japanese emissions laws mandate engine replacemnt at 30,000 miles, so complete take-outs imported from japan are a popular option here in the US. generally The japanese domestic market (JDM) engines have more power than US varients due to higher compression nd a bigger cam. Type R engines, if offers for you engine series, are invariably better than the US version. Searching the web for JDM Engines turns up thousands o hit. Major imprters include MANTARAY MOTORSPORT RACING, NIPPON MOTORS, and REMANUFACTURED.com
If youve ever woundered why every JDM motor you see says LESS than 30k miles !! on it !! that things not even broken in yet !!
JDM Engines
Japanese emissions laws mandate engine replacemnt at 30,000 miles, so complete take-outs imported from japan are a popular option here in the US. generally The japanese domestic market (JDM) engines have more power than US varients due to higher compression nd a bigger cam. Type R engines, if offers for you engine series, are invariably better than the US version. Searching the web for JDM Engines turns up thousands o hit. Major imprters include MANTARAY MOTORSPORT RACING, NIPPON MOTORS, and REMANUFACTURED.com
If youve ever woundered why every JDM motor you see says LESS than 30k miles !! on it !! that things not even broken in yet !!
Guest
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Yeah, already knew the 30k mile thing.
So Im glad you see it my way on the closed deck thing. B20a's may have a closed deck, but b20b/z's have an open deck. Some H22's have a closed deck, I believe the H22a from sub 96 have the closed deck design.
So Im glad you see it my way on the closed deck thing. B20a's may have a closed deck, but b20b/z's have an open deck. Some H22's have a closed deck, I believe the H22a from sub 96 have the closed deck design.
