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Cp pistons 81.5 9.8:1cr. Lsvtec basic First timer!
i bought used block off acquaintance friend locally known to build motors so i took a $600 chance on his short block complete minus head / tranny parts. He doesn't remember if it was the 9:1 or 9:8.1 cr ratio. Can anyone identify it I tried pulling google image but they all use same picture.
Last edited by KiNGDEE206; Sep 11, 2019 at 01:02 AM.
Reason: Mods can u change title please! Changing this into build thread
i bought used block off friend. He doesn't remember if it was the 9:1 or 9:8.1 cr ratio. Can anyone identify it I tried pulling google image but they all use same picture.
Well the images in the site are just general images used just for the varying degrees of choices. They won't really show a photo of each individual piston.
You're going to more than likely be somewhere in the middle anyway depending upon the head that you're going to use, it's valves, milled block/head surfaces etc.
The only way to truly confirm use to either find some etched part numbers or take the block alert, take full measurements and compare with the catalog (which IMHO is not worth doing, really, due to what I said in the previous paragraph)
only other way is if someone else with the same pistons can confirm which I think is what OP was hoping for. If I had to guess I would say those are the 9:1 model
But I do agree with shodan here once model is verified you need to take the specs punch it into a compression calc along with your other motor specs to get anything accurate
Thanks guys. Yea I no punch the zeal calculator I just wanted to know if pistons themselves were 9:1 spec or 9:8.1 spec. I know it'll change with what first post said. Milling head block hg valves
for some reason I see a lot of cp pistons don't have part numbers but numbers like 82-2 or 79-2
not exaclty, its dependent on crank used (LS vs GSR), head (b16 vs gsr), amount of milling done to head/ block, HG thickness. depending on the combination of all those factors will change things quite a bit
the "bowled" pistons have less static compression height than flat pistons. So comparing with the 9:1 (more "bowled" than yours) i would suggest yours are 9,8:1.
the "bowled" pistons have less static compression height than flat pistons. So comparing with the 9:1 (more "bowled" than yours) i would suggest yours are 9,8:1.
Yea I agree with you after looking at it a bit more just received the pic of my 9.8's they look to be same as the op
Is it me or you re in the best position possible to do a twin charged setup?
I dont think itll be very effecient and a waste of a SC
im gonna use the SC on a basic B20vtec SC at a later time
~~~~~
little update i gotten in a car accident on my daily ej8 sedan
and so im bit handicap injured
this will be little slow to get going
resurfaced flywheel 12LB CC
put on my CC stage4 sprung kit on
Now thats left:
put on hondata 4bar map sensor(gotta find it forgot where i left it)
put on transmission (Waiting on any friend to come help since im handicap injured rn)
buy new Orings that sit in IM for my 750cc
buy oil pan gasket
need a VC gasket kit
You have some quality parts in your setup, should be fun.
I don't think those are ID injectors tho, sir.
ID makes 725's afaik....That's what I have...and if you google some images you will see some discrepancies.
They have a colored band/clip component, and the nozzle/pintle area will be machined away considerably as part of the modification process.
Also they will have either a hand-etched serial number or later units have laser-etched logos.
You can ask them to check the unique serial to verify if they are genuine, they have every injector they ever sold documented.
Those look like un-modified Bosch injectors.
Which might even be better than 725's. If they're some of the 2200 cng types you can make a lot of power.
Maybe even 1000's.
I think you need to know what the rating is so it can be tuned.
I suppose it will become evident quickly to a competent tuner, but being able to load proper dead times etc. at first will be best.
You have some quality parts in your setup, should be fun.
I don't think those are ID injectors tho, sir.
ID makes 725's afaik....That's what I have...and if you google some images you will see some discrepancies.
They have a colored band/clip component, and the nozzle/pintle area will be machined away considerably as part of the modification process.
Also they will have either a hand-etched serial number or later units have laser-etched logos.
You can ask them to check the unique serial to verify if they are genuine, they have every injector they ever sold documented.
Those look like un-modified Bosch injectors.
Which might even be better than 725's. If they're some of the 2200 cng types you can make a lot of power.
Maybe even 1000's.
I think you need to know what the rating is so it can be tuned.
I suppose it will become evident quickly to a competent tuner, but being able to load proper dead times etc. at first will be best.
the guy I bought from said Bosch 750cc k series. I bought some ktuned too hats
its already obd2 for my ek so I’m solid on that
its been going really slow
i got car accident a month ago
a seizure two weeks ago
i just bought valve cover gasket and grommets
To finish:
Buy eBay fan and rad $60. Use eBay fan in front while stock fan in og location for why not
need to buy grommets for injectors
go to fitting store buy some fittings to screw in my intake manifold
some fuel rail bolts 10mm
put transmission on
find the hex screw size and remove from spare block
i sold my inline pro manifold. And got scammed on a mini ramhorn so PayPal got my money back. Gonna use my blox one until I get a better one
here’s some pics
Last edited by KiNGDEE206; Oct 8, 2018 at 08:27 PM.
In he process of buying this manifold second hand brand metigulous
what u guys think solid? Getting it for great deal and I sold the inlinepro my drag manifold wg location is on cyl one which is no bueno I read
so my catch can is 4x -10an port
my vc is -12an I bought 2 adapters -12 >-10an fittings
i block off stock black catch can
is 2 -10an good enough?
or should i buy 2 block -10an fittings and hoses and run all 4 still block off black catch can?
new to this need to do more reading
need to buy 3 m6x1.00x22mm studs or bolts
need to buy a 14mm allen Key 1/2 in socket
need to find a new FPR or find a 90 degree angle?
Got the metigulous turbo manifold for a steal. Brand new but second hand
i just need to go buy. A 14mm Allen 1/2 socket
put oil pan gasket on
find 3 m6-1.00-22mm studs
ive checked oem b16a2 hey only sell by 2
ive tried local hardware they’re not double sided idk if that matters
then I can put it in the car
been little slow bc dealing with my wrecked stock ex civic
e:next day
Went to harbor freight. Bought me 9piece Allen key 1/2 3/8 socket set and got free 5x7ft tarp
they always give out free 5x7 tarps from coupon. Which is awesome. Let’s face it. Who doesn’t want free tarps lol
My ingersoll rand w7150k is awesome. Got it for my bday 6 years ago still running strong!
im going to vent my catch can to only the top vc ports nothing on block
hopefully someone can chime in and tell me that works ok or not.
now I only need to put oil pan on (gotta go buy the sealant)
gotta buy 3x m6-1.00-22mm studs
Last edited by KiNGDEE206; Oct 29, 2018 at 05:21 PM.
Where did you get the adapters to go from an OBD1 harness to the ID injectors?
came with the injectors I bought
swap is installed!
I ran into a problem with ruel rail
i ordered oem em1 m6-1.00-28mm
too short
gotten m6-1.00-40mm. Bolts. Just a hair too much. Gotta go back to McLendon and buy some washers to space it out
the edelbrock performer x is a very tight fit with firewall holy
swap is installed!
I ran into a problem with ruel rail
i ordered oem em1 m6-1.00-28mm
too short
gotten m6-1.00-40mm. Bolts. Just a hair too much. Gotta go back to McLendon and buy some washers to space it out
the edelbrock performer x is a very tight fit with firewall holy
Cp pistons 81.5 9.8:1cr. Lsvtec basic First timer!
