Originally Posted by notepad

First things first. This was made up by myself (Tom...a.k.a. simple4012) and mark (NAspirated).
We made this because we kept seeing posts that were the same. Mostly about building a Frankenstein motor. Frank motors are known as CRVtec's or Ls/Vtec's. If you still have questions. DO NOT HESITATE TO POST OR SEND US A PM. However we feel this will be of great help. This is to be used as a reference only, and neither myself, mark nor Clubsi.com is liable for you blowin your car up. With that being said we shall begin.

First some basics:

Either the Ls block or the CRV block can be found at a junkyard. Call around and look. They arent that hard to find. Especially the ls blocks. Dime a dozen. Look to pay about 250-300 for the ls block.or about 800-1000 for the CRV block. If you are going to resleeve the ls block then obviously it doesnt pay to buy the crv block. Save some money and buy me something.

The benefit of the CRV block over the LS block is the size. The cranks are IDENTICAL but the b20 (crv) has an 84 mm bore as opposed to a 81 mm bore that the ls block has. One issue i see people say alot is "Does it matter the mileage of my motor". Not really no. You are going to rip it apart, replace everything and put it back together anyway. The only thing that will really matter in this issue is the condition of the cylinder walls. Even if in bad shape however they can be bored then honed and then are ready to go. CRV block are kinda tricky though. JE only makes 84mm and 85mm pistons. This means unless the block is practically brand new (like under 15k on it) you will have to bore it 40 thousandths (spelling?) over if you intend on using these products. Ls blocks are basically always ok, unless ya spun a bearing in which case dont even bother with the thing. A bore and a Hone will fix most problems.

The advantage of the LS block is that there is a vast array of Honda pistons you can use. CTR, JDM ITR and USDM ITR all make good canidates. These are cheap (330 or so with rings, most of the time they are cheaper) and since honda is so damn cool.....they make oversized. So get this one: buy a used ls block at the junkyard. Bore it over and then use CTR pistons along with the stock ls everything else and ya done! Thanks honda!

But.....CRV blocks are a lil different and here is why they more money. Honda never intended on making the b20 a high performance motor. So why make pistons that are the same bore? They dont really. Just stock B20 pistons. which yield a stupid low CR. And also the valve reliefs on the stock CRV pistons are not big enough to accept the valves of VTEC heads. So if using larger cams you cant really play with the cam gears too much. or else problems will occur. So what do you do? Buy aftermarket right?!? 500 for slugs. then 300 for rods. So right away thats 800-900 dollars more then the
Ls block...But you WILL HAVE MORE POWER!

Now as for parts you will need with either motor. These are NEEDS not WANTS. They are a part of either build and will not be listed in the motors simply because we will assume you will get them.
1. New rod and main bearings. Please dont ask what kind ya need. they are different for every motor.
2. New head gasket, Oil pan gasket, rear main seal, Oil return gasket, oil filter
3. Thrust washers
4. fittings for running the external oil line.
5. You must have the entire rotating assembly balanced!!!!!!!
6. New VTEC Water pump.
7. New VTEC oil pump.
8. New VTEC Timing belt.
9. BE SURE TO MATCH THE WATER PUMP AND TIMING BELT. VTEC=VTEC and Non-vtec=Non-vtec. otherwise your car will
die a very painfull death.!
10. We both prefer ARP bolts to stock. Stock is usable but ARP is cheap insurance.

We also assume that you have bolt-ons already. Intake, Header with a 2.5 inch collector and a good exaust.
If you dont have these.....get them.....NOW!


Like said above. We will assume that all the motors being built will use this stuff...hence: we will not list these parts in the total build up parts list.


BLOCK SET-UP

LSVTEC block MILD: (250)
CTR/TYPE-R pistons (330)
LS rods


LSVTEC block MEDIUM: (250)
JE 11.5 pistons (Ross also make pistons for this application) (485)
EAGLE rods (350)


LSVTEC bock WILD: (250)
Resleeve with Golden Eagle Sleeves 85 MM bore (1000)
JE 12.5/13.0 pistons (Ross also will do) (485)
CROWER connecting rods (500)


B20VTEC block MILD: (900)
Stock B20 pistons
Stock rods


B20VTEC block MEDUIM: (900)
JE 11.5 or 12.5 pistons (485)
EAGLE rods (350)


B20VTEC block WILD: (900)
GOLDEN EAGLE 86MM SLEEVES (1000)
Custom 12.5/13.0 Pistons (500)
95 mm Crank (800???)
Deck Plate (machine shop cost)


HEAD PACKAGES WITH LSVTECS/B20VTECS

MILD:
Type-R head with skunk2 stage 1 cams, skunk2 cam gears.
($800-$1200 full head, $600 for cams, 200 for gears)

SI head with skunk2 stage 1 cams OR JUN type 2, Type-R Valve Train, Skunk2 cam gears OR JUN cam gears, Type-r Inner and Outer springs w/ retainers .
($400-$600 for head, $600 skunk2 cams / $800 for JUN type 2, $200 for Skunk2 cam gears / JUN cam gears?, Type-R valve train $350)

GSR head: Similar as SI head

MEDIUM:
Type-R head with skunk2 stage 2 OR JUN type 3, Skunk2 valve train OR Port flow INNER-OUTER valve springs TI Titanium Retainers OR JUN valve train, Skunk2 valves, Skunk2 cam gears OR JUN cam gears .
($800-$1200 full head, $650 for Skunk2 cams / $850 for JUN 3 cams, $440 skunk2 valve train / $380 JUN valve train, $200 Skunk2 cam gears / JUN cam gears?

SI Head: ($400-$600 for the head) Similar to Type-R setup

GSR Head: ($400-$600 for the head) Similar to Type-R setup


WILD:
GSR head with TODA SPEC C cams, TODA cam gears, TODA springs, titanium retainers, TODA Individual throttle body / or TWM I.T.B.
($400-$600 for the head, $1900 for TODA Head package includes SPEC C cams-cam gears-valve train, $2500 for TODA Individual Throttle Body, $2000 for TWM Individual Throttle Body

SI head: Similar to GSR setup

TYPE-R head: Similar to GSR setup (add an extra 300-500 bucks for the head if purchased seperatly)


Tranny Info for Frankenstein motors

For the most part any GSR or Type R tranny is good for these motor's. The B16 tranny is not as strong as these. The differential is actually physically smaller then on these trannies. This could be due to the smaller motor, cost cutting....whatever the case may be. I dont trust it.
I broke mine on street tires and have seen many others do the same. Yes it will work. Yes it will bolt up...But i wouldnt use it.....Unless you have too. That tranny with a Quaife lsd would be good. The gearing in that and the ITR are the same so it would be ok. for performance.
But still why bother.......just get a 1.8 tranny!


DECENT setup for the street: (500-600)
Any GSR or Type R tranny

NICE setup for street: (1700)
GSR tranny
Quaife LSD
JDM Final Drive
or...
JDM ITR Tranny with 4.785 FD

SWEET setup for the street: (2600)
Type R tranny
Quaife LSD
JDM Final drive

HOLY GOD setup for the street: (3200)
Type R tranny
Quaife LSD
ATS 4.929 Final Drive
Gsr 5th gear

For an all out track car i would would like this setup most: (4000 +)
Type R tranny
Quaife 5.1 Final Drive
Spool differential
Custom Kaaz Gearing


ECU Setups for Frank motors

You have a few choices here:

GREAT setup for the street: (550)
P28 rechipped with a JDM B16 proggy with a higher rev limit.
VAFC
Many people dount this setup because it is a "stock" program. DONT. This is a great setup, and when
paired with the VAFC provides very good tunability and since it is a stock program it is much less prone to detonation for timing reasons. There are a few people going very fast with this setup.....some are even on this message forum. Our pro car at http://www.b20vtec.com is another. 11.53@114mph with this exact setup.

ANOTHER setup for the street: (500)
P28 with hondata
Dont matter what you call it Hondata works well for street cars. make good power while having good drivability.

More ECU choices:
Accel DFI 7.0 2100
Speedpro 2100 ( comes with wideband)
AEM EMS 1400 or so
LINK not sure


Fuel setups for Frank Motors

Fuel systems are actually pretty easy with these motors. They arent that hard to figure out.

BASIC setup for Ls/Vtec: (550)
RC 270 cc injectors
Holley 190 fuel pump
adjustable FPR with gauge

BIG setup for Ls/Vtec: (550-600)
RC 310 cc injectors
Holley 255 pump
adjustable FPR with gauge

BASIC setup for CRVTEC: (550-600)
RC 310 cc injectors
Holley 255 pump
adjustable FPR with gauge

BIG setup for CRVTEC: (600)
RC 370 cc injectors
Holley 255 pump
adjustable FPR

If doing ITB then the kit will come with an adjustable FPR and 440 cc Injectors.