xero_xero

i have 2 transmissions. both are labeled as s20/p20. the difference is the CX(d15b8) transmission is labeled j8f, and the si(d16z6) transmission is labled y4b. i see no a000 or b000 on the transmissions. questioning gearing and other options for later.

David @ Synchrotech

iTrader: (1)

There is a small circle cast in the main case by the fill plug about the size of a penny. In the circle it will be cast with P20/A00 for the 92-95 CX/VX or DX/LX with 35mm diff bearings. The EX/Si will be cast P20/B00 with 40mm diff bearings. There are 3 different Gear ratios for the USDM 92-95 S20 transmission. CX/VX - DX/LX - and EX/Si. The J8F CX has the longest ratio with a 3.25 FD and the Y4B Si has the shortest 4.25 FD.

xero_xero

thankyou. i was looking at you guys transmissions about a week ago. just picked up a complete swap and was questioning gearing for autocross.

do you guys have any experience with the phantom grip installed and advantages over an lsd other than the price. the biggest question is do they work?

David @ Synchrotech

iTrader: (1)

We do not use the Phantom Grip in our builds. I would suggest going with a real LSD. It may cost a bit more but it is well worth it for the better part and performance.

xero_xero

looking for an lsd gfor the y4b at the moment.

lowgroove

hey community about to cry, 1992 vx just was about to hit 250000 and im todl the transmission is shoot what are my options

xero_xero

rebuld. syncrotech can hook you up with a good rebuilt. your trans is near the same as a dx. so it may be cheaper just to swap in a used dx trans, as they are a dime a dozen.

lowgroove

Hey Dave do you think that vx tranny will be ready tommorrow? what kind of fluid should i use in it and how much

David @ Synchrotech

iTrader: (1)

Sent you a PM

xero_xero

Okay, to revisit this topic, i now have a P20 b000 transmission with a 24e lsd. i was looking at different fluids and questioned if the lsd required a bit thicker fluid.

David @ Synchrotech

iTrader: (1)

Do you have any pics of the LSD? It is probably a viscous LSD. The viscous and helical LSDs do not require special oil but the clutch type LSD does.

xero_xero

xero_xero

what is the difference between the s20 and p20 casings?

Mista Bone

S20 on the label, P20 on the casting. Just Honda's way on confusing people.

xero_xero

i need the answer to this questin as well.

David @ Synchrotech

iTrader: (1)

About 2.5 quarts Honda MTF or 10W30 oil for daily use. Fill it until it runs out of the fill hole.

xero_xero

i looked it up in my hatnes 84 to 91 civic manual. didnt give an exact capacity. i put 2 quarts sae 10w30 royal purple.

the trans seems buttery smooth, 4th gear isnt even broke in yet.

Mista Bone

I'd get that Barney junk out at next engine oil change.

What do you mean 4th gear isn't broke in yet?

kaiba

S20 label = P20 casting, there are the 92-95 Civic chassis spec transmission. = Aluminum folk

xero_xero

4th gear has a great engagement. no slop or play what so ever. feels like a new transmission.

as far as the barney junk, in comparison, royal purple has the most Ppm of zink additive than any other Sae motor oil. Not even the moto guys have that high of a concentration. the only ones that do have this is thicker diesel oils like rotella from shell. this is because the rotational assembly just needs the oil to stick to more and for longer for protection. this is why, as well, there was a big changeover in mtf, oil, and other petroleum products with zink additives in 1974, 1986, and 1995.

what is the problem with the oil in my transmission?

hatchaneg

hold the phone...i'm just about to put my tranny back in and was going to run to honda for some mtf and maybe grab some syncromesh to mix in with it...you're saying i can use the bottle of 10w30 motor oil i have and it'll be just as good?

Mista Bone

10w30 is all you need for a DD tranny.

hatchaneg

The car can no longer be considered a DD lol...its a turbo-d circuit car
I sometimes do gm syncromesh mixed with honda mtf or just straight mtf

Mista Bone

Just say NO to Honda MTF or Redline MTL or MT-90.

hatchaneg

...so what should I say YES to?