Vitara pistons in D16A6. Too Low C/R?
#1
Vitara pistons in D16A6. Too Low C/R?
Just read 17 pages on the Vitara thread, doesnt seem lik anyone has tried them in a D16a6 motor.
Ive got a D16a6, head is milled .040 and I can go with a 2 layer headgasket if need be
Ive got a set of SRP's but knowone including me knows the comrpession of them and I dont wanna drop in 11:1 pistons, run 17psi on 93 octane and BOOM!
And my block is already honed for stock 75mm and would save machine shop money and I could sell the SRP's
I plan running them in @ 16-18psi on a t3 .60/.63 daily
Thanks for any imput
Ive got a D16a6, head is milled .040 and I can go with a 2 layer headgasket if need be
Ive got a set of SRP's but knowone including me knows the comrpession of them and I dont wanna drop in 11:1 pistons, run 17psi on 93 octane and BOOM!
And my block is already honed for stock 75mm and would save machine shop money and I could sell the SRP's
I plan running them in @ 16-18psi on a t3 .60/.63 daily
Thanks for any imput
#2
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.030 milled on a head is usually a point of compression, that should be enough so the vitaras won't be a problem. You have forged rods for this motor?
#3
Re: (D15B7turbo)
Ive got used eagle H beams with ARP 2000 rod bolts in there. Turned this into a major budget build
And I dunno where I read it but I heard .040 was a point of compression....
But does anyone have a compression ratio for the vitaras in a an A6 block n head
And I dunno where I read it but I heard .040 was a point of compression....
But does anyone have a compression ratio for the vitaras in a an A6 block n head
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#9
Re: (D15B7turbo)
I was actually shooting for 10:1 before I found out I was scammed and given the wrong pistons
Jsut looking for an accurate compression in an A6 unmilled with a stock gasket
Is 7.8:1 correct or is it even lower?
Jsut looking for an accurate compression in an A6 unmilled with a stock gasket
Is 7.8:1 correct or is it even lower?
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Re: (W O T)
who cares. Boost it and forget it It comes out to about 155psi across each cylinder, we know that for sure. Johnnyquest is using these right now on 10psi.
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Re: (b16coupe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16coupe »</TD></TR><TR><TD CLASS="quote">Why do you want high compression.</TD></TR></TABLE>
It's the cool thing to do.
OT: Hell, compression's not the only factor in power. Proper turbo selection is too. Just a helpful thought
It's the cool thing to do.
OT: Hell, compression's not the only factor in power. Proper turbo selection is too. Just a helpful thought
#14
Re: (racinskittle)
I dont want high compression, I want a useable powerband
I read that in a stock A6 they give a 7.8:1 ratio, obviously ***** low
But like I said my head is milled .040 and Im gonna run a small headgasket.
THe goal I want is atleast 9.3-9.7:1
Im running a T3 .60/.63, fairly big for a sohc but not a huge dyno fairy
I am also limited to 93 octane and the goal with the car is an 11 second slip
I dont care if it blows on the first run, as long as the slip says 11.XX @ 125+ Ill be a happy mother ******
I read that in a stock A6 they give a 7.8:1 ratio, obviously ***** low
But like I said my head is milled .040 and Im gonna run a small headgasket.
THe goal I want is atleast 9.3-9.7:1
Im running a T3 .60/.63, fairly big for a sohc but not a huge dyno fairy
I am also limited to 93 octane and the goal with the car is an 11 second slip
I dont care if it blows on the first run, as long as the slip says 11.XX @ 125+ Ill be a happy mother ******
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Re: (W O T)
1. There's no way you're going to trap 125 on vitara's.
2. 155psi across is NOT too low either.
3. turbodd16y7vtec just made 250whp @ 10psi with 155psi across the board. Stock block.
I like that 60 trim .60/.63 turbo
2. 155psi across is NOT too low either.
3. turbodd16y7vtec just made 250whp @ 10psi with 155psi across the board. Stock block.
I like that 60 trim .60/.63 turbo
#16
Re: (racinskittle)
1.You havent seen my motor build
2.Slicks,LSD,equal length mani, fat turbo, 18psi, completely worked head = 300whp
Sooooooooooo much done to this motor for under $3000 including the turbo kit its not even funny
Ive also got N20 and lot of axles if I feel like it lol
2.Slicks,LSD,equal length mani, fat turbo, 18psi, completely worked head = 300whp
Sooooooooooo much done to this motor for under $3000 including the turbo kit its not even funny
Ive also got N20 and lot of axles if I feel like it lol
#18
Re: (racinskittle)
hopefully is the exact word, everything ***** up for me
I was doing some sliding around in **** tonight in a parking lot with some friends, got a little to fast and a little to sideways and couldnt correct myself, right up onto and over the curb with the car resting on the sideskirts..... my sideskirts were moulded......
Ya that ***** now held on by a screw and some black duct tape (my cars black lol)
Time to get rid of the body kit anyways, dont want my baby to get ripped off
BTW- sliding on ice is kickass
Bump for an accurate compression ratio
I was doing some sliding around in **** tonight in a parking lot with some friends, got a little to fast and a little to sideways and couldnt correct myself, right up onto and over the curb with the car resting on the sideskirts..... my sideskirts were moulded......
Ya that ***** now held on by a screw and some black duct tape (my cars black lol)
Time to get rid of the body kit anyways, dont want my baby to get ripped off
BTW- sliding on ice is kickass
Bump for an accurate compression ratio
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Get a RWD, then you can launch at the track and slide around in the dry ;^), your compression is going to be right around 9:1. Just put them in, you'll be fine.
#21
Re: (racinskittle)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by racinskittle »</TD></TR><TR><TD CLASS="quote">
3. turbodd16y7vtec just made 250whp @ 10psi with 155psi across the board. Stock block.
</TD></TR></TABLE>
Finally some #'s for the vitaras. My motor is torn down and being rebuilt right now....couple more months till its in, but its good to hear some decent #'s to look forward to!
3. turbodd16y7vtec just made 250whp @ 10psi with 155psi across the board. Stock block.
</TD></TR></TABLE>
Finally some #'s for the vitaras. My motor is torn down and being rebuilt right now....couple more months till its in, but its good to hear some decent #'s to look forward to!
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Re: (G3NR8)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G3NR8 »</TD></TR><TR><TD CLASS="quote">Finally some #'s for the vitaras. My motor is torn down and being rebuilt right now....couple more months till its in, but its good to hear some decent #'s to look forward to!</TD></TR></TABLE>
That was actually on a stock block ~8.5 compression
That was actually on a stock block ~8.5 compression
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Re: (G3NR8)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G3NR8 »</TD></TR><TR><TD CLASS="quote">Finally some #'s for the vitaras. My motor is torn down and being rebuilt right now....couple more months till its in, but its good to hear some decent #'s to look forward to!</TD></TR></TABLE>
Those are not the only numbers..
Currently i have 2 friends with Civic Coupes running 12's with the vitaras..
1- D16Y7 motor on a 1998 Coupe.. Log Manifold, Small t3(.48/.42), starion FMIC,Stock head and valve train, running on a SAFC,walbro Fuel pump and some DSM injectors--> Best time on slicks so far is 12.26@112mph. Car is complete and with A/C hooked up and cooling
2-1999 civic HX(D16y5)..Basically Same setup as above. Running 12.7@107mph
I expect to run 12's too on a SOHC non Vtec with my setup..just havent had time to finish this damn thing.. New Clutch,Flywheel and LSD going in soon so i can tune and go search the 12 sec runs..
Those are not the only numbers..
Currently i have 2 friends with Civic Coupes running 12's with the vitaras..
1- D16Y7 motor on a 1998 Coupe.. Log Manifold, Small t3(.48/.42), starion FMIC,Stock head and valve train, running on a SAFC,walbro Fuel pump and some DSM injectors--> Best time on slicks so far is 12.26@112mph. Car is complete and with A/C hooked up and cooling
2-1999 civic HX(D16y5)..Basically Same setup as above. Running 12.7@107mph
I expect to run 12's too on a SOHC non Vtec with my setup..just havent had time to finish this damn thing.. New Clutch,Flywheel and LSD going in soon so i can tune and go search the 12 sec runs..