those that used vitara pistons...
09-23-2005, 08:36 AM
#26
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Re: (Hella_JDM)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hella_JDM »</TD></TR><TR><TD CLASS="quote"> slap isnt a big deal my cp's slap a tiny bit when cold....</TD></TR></TABLE>
Slap is a big deal - it indicates excessive piston to bore clearance, which sets you up for hot spots and detonation. This is why every single set of Vitaras I've seen rattles like hell, and melts a hole through the side of the piston's ring package if you bump fuel cut revlimit a few times. You think you are getting a margin of safety with Vitaras, due to the dropped CR, and I'm pretty sure you don't get anything of the sort unless the clearances are correct.
Forged pistons expand more than a cast Vitara - you set the piston-bore clearance with forgings a bit more so that they are the correct clearance at operating temperatures.
BTW, glad to see you still rock the big warm vagina sig.
and, FYI, there are a two (?) ring manufacturers in the world. Hastings look exactly like OEM Honduh and Scooby, which for a compression ring doesn't mean much, but there is a bit of possible difference for the way the oil control ring's spacer is constructed...
... and 98-00 GX pistons are $25/per with dealer hookup, fit right onto the ends of LS rods which slip into a D16 after slimming the big end. Port out the chamber to drop the CR, heaven..
Slap is a big deal - it indicates excessive piston to bore clearance, which sets you up for hot spots and detonation. This is why every single set of Vitaras I've seen rattles like hell, and melts a hole through the side of the piston's ring package if you bump fuel cut revlimit a few times. You think you are getting a margin of safety with Vitaras, due to the dropped CR, and I'm pretty sure you don't get anything of the sort unless the clearances are correct.
Forged pistons expand more than a cast Vitara - you set the piston-bore clearance with forgings a bit more so that they are the correct clearance at operating temperatures.
BTW, glad to see you still rock the big warm vagina sig.
and, FYI, there are a two (?) ring manufacturers in the world. Hastings look exactly like OEM Honduh and Scooby, which for a compression ring doesn't mean much, but there is a bit of possible difference for the way the oil control ring's spacer is constructed...
... and 98-00 GX pistons are $25/per with dealer hookup, fit right onto the ends of LS rods which slip into a D16 after slimming the big end. Port out the chamber to drop the CR, heaven..
09-23-2005, 09:40 AM
#27
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Re: (J. Davis)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis »</TD></TR><TR><TD CLASS="quote">
Slap is a big deal - it indicates excessive piston to bore clearance, which sets you up for hot spots and detonation. This is why every single set of Vitaras I've seen rattles like hell, and melts a hole through the side of the piston's ring package if you bump fuel cut revlimit a few times. You think you are getting a margin of safety with Vitaras, due to the dropped CR, and I'm pretty sure you don't get anything of the sort unless the clearances are correct.
Forged pistons expand more than a cast Vitara - you set the piston-bore clearance with forgings a bit more so that they are the correct clearance at operating temperatures.
BTW, glad to see you still rock the big warm vagina sig.
and, FYI, there are a two (?) ring manufacturers in the world. Hastings look exactly like OEM Honduh and Scooby, which for a compression ring doesn't mean much, but there is a bit of possible difference for the way the oil control ring's spacer is constructed...
... and 98-00 GX pistons are $25/per with dealer hookup, fit right onto the ends of LS rods which slip into a D16 after slimming the big end. Port out the chamber to drop the CR, heaven..</TD></TR></TABLE>
ok do you have vitara pistons? if yes do you have any problems with them?
Slap is a big deal - it indicates excessive piston to bore clearance, which sets you up for hot spots and detonation. This is why every single set of Vitaras I've seen rattles like hell, and melts a hole through the side of the piston's ring package if you bump fuel cut revlimit a few times. You think you are getting a margin of safety with Vitaras, due to the dropped CR, and I'm pretty sure you don't get anything of the sort unless the clearances are correct.
Forged pistons expand more than a cast Vitara - you set the piston-bore clearance with forgings a bit more so that they are the correct clearance at operating temperatures.
BTW, glad to see you still rock the big warm vagina sig.
and, FYI, there are a two (?) ring manufacturers in the world. Hastings look exactly like OEM Honduh and Scooby, which for a compression ring doesn't mean much, but there is a bit of possible difference for the way the oil control ring's spacer is constructed...
... and 98-00 GX pistons are $25/per with dealer hookup, fit right onto the ends of LS rods which slip into a D16 after slimming the big end. Port out the chamber to drop the CR, heaven..</TD></TR></TABLE>
ok do you have vitara pistons? if yes do you have any problems with them?
09-23-2005, 09:50 AM
#28
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Re: (J. Davis)
oh no doubt piston slap is bad at operating temp , but what i meant by not when its cold is exactly what you said , the engine builder bores the walls taking into account the expansion of the forged piston at operating temp.
09-23-2005, 06:34 PM
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Re: (sohc ninja)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohc ninja »</TD></TR><TR><TD CLASS="quote">
ok do you have vitara pistons? if yes do you have any problems with them?</TD></TR></TABLE>
I watched Rob Blossfield go through three sets of them on stock bore, would melt 1 or two of them every two months @ 12 psi on a D16Z6/GT28RS. He now has a sleeved engine with forged internals and no more complaints - overkill for what he wanted, but after all that misspent effort he decided to pay to play intead of ******* around any more.
Jason @ Redline in Asheville, NC, has a couple of them (Rob's old pistons) laying around that he uses for ashtrays. 828 665-9030 until the end of the month, if you want to get a second opinion on them from an old school domestic guy, then they move acros town + probably change their number.
ok do you have vitara pistons? if yes do you have any problems with them?</TD></TR></TABLE>
I watched Rob Blossfield go through three sets of them on stock bore, would melt 1 or two of them every two months @ 12 psi on a D16Z6/GT28RS. He now has a sleeved engine with forged internals and no more complaints - overkill for what he wanted, but after all that misspent effort he decided to pay to play intead of ******* around any more.
Jason @ Redline in Asheville, NC, has a couple of them (Rob's old pistons) laying around that he uses for ashtrays. 828 665-9030 until the end of the month, if you want to get a second opinion on them from an old school domestic guy, then they move acros town + probably change their number.
09-24-2005, 11:15 AM
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Re: (J. Davis)
If the viataras are garbage why would your boy put the same pistons in 3 times? Thats what i dont understand? Obviously forged pistons are better so there no point comparing the two, but from what the majority have said the vitaras are a good alternative.
09-24-2005, 02:04 PM
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Re: (SohcPower)
i just balanced all my vitaras on eagle rods to within .5 of each other.....and brought the head away.. should be in and running ina a week, and i'm excited. they are going in a block i tore down yesterday, and the cylinder walls are absolutely great, so thats encouraging.
we'll see how it goes..... i have faith in them, due mainly to the large amount of people i've seen with good luck from them, a few firsthand (splitime-daily driven, 18 psi, iamtherealkevron, still tuneing)
edit: i just measured the vitaras, compared to my pistons that were in the car. they are about 2.5 thousandths (inch) smaller than the stock pm6 ers. the stock pistons were pretty much in perfect shape too. i have picture of the pistons next to each other too, if anybody wants to host them. good shots. PM me if you can host them.
Modified by redzcstandardhatch at 11:34 PM 9/24/2005
we'll see how it goes..... i have faith in them, due mainly to the large amount of people i've seen with good luck from them, a few firsthand (splitime-daily driven, 18 psi, iamtherealkevron, still tuneing)
edit: i just measured the vitaras, compared to my pistons that were in the car. they are about 2.5 thousandths (inch) smaller than the stock pm6 ers. the stock pistons were pretty much in perfect shape too. i have picture of the pistons next to each other too, if anybody wants to host them. good shots. PM me if you can host them.
Modified by redzcstandardhatch at 11:34 PM 9/24/2005
09-24-2005, 03:02 PM
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Re: (SohcPower)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SohcPower »</TD></TR><TR><TD CLASS="quote">If the viataras are garbage why would your boy put the same pistons in 3 times? Thats what i dont understand? Obviously forged pistons are better so there no point comparing the two, but from what the majority have said the vitaras are a good alternative.</TD></TR></TABLE>
1) I never said the Vitaras were garbage. I said in standard size they were too small. That results in a garbage install.
2) I was objecting before the first install, when I found out he was going to use standard size piston on a 120K mile bore. Before I even knew the Vitara's were undersized.
3) I have no idea why everyone doesn't do everything I say. Boggles my mind to no end.
4) Forged aluminum pistons aren't really any better. Grain flow helps, sure, and so does a little extra attention to the design (lands, mass, etc) but at the temperatures they run they're still soggy in the center from combustion temperatures. Dropping 100-200 degrees off combustion temperatures would render stockers as strong as forgings. Or we could just use an iron piston, like some people did 80 years ago, which actually makes sense.
1) I never said the Vitaras were garbage. I said in standard size they were too small. That results in a garbage install.
2) I was objecting before the first install, when I found out he was going to use standard size piston on a 120K mile bore. Before I even knew the Vitara's were undersized.
3) I have no idea why everyone doesn't do everything I say. Boggles my mind to no end.
4) Forged aluminum pistons aren't really any better. Grain flow helps, sure, and so does a little extra attention to the design (lands, mass, etc) but at the temperatures they run they're still soggy in the center from combustion temperatures. Dropping 100-200 degrees off combustion temperatures would render stockers as strong as forgings. Or we could just use an iron piston, like some people did 80 years ago, which actually makes sense.
09-24-2005, 06:30 PM
#34
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Re: (J. Davis)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis »</TD></TR><TR><TD CLASS="quote">
3) I have no idea why everyone doesn't do everything I say. Boggles my mind to no end.
</TD></TR></TABLE>
i say the same thing about my gf all the time.
if she just did what i told her, i wouldnt have to beat her. i am sure someday she will learn.
3) I have no idea why everyone doesn't do everything I say. Boggles my mind to no end.
</TD></TR></TABLE>
i say the same thing about my gf all the time.
if she just did what i told her, i wouldnt have to beat her. i am sure someday she will learn.
09-24-2005, 09:51 PM
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Re: (Zer0DazE)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Zer0DazE »</TD></TR><TR><TD CLASS="quote">
i say the same thing about my gf all the time.
if she just did what i told her, i wouldnt have to beat her. i am sure someday she will learn.</TD></TR></TABLE>
LMAO
i say the same thing about my gf all the time.
if she just did what i told her, i wouldnt have to beat her. i am sure someday she will learn.</TD></TR></TABLE>
LMAO
09-24-2005, 11:39 PM
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Re: (Zer0DazE)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Zer0DazE »</TD></TR><TR><TD CLASS="quote">
if she just did what i told her, i wouldnt have to beat her. i am sure someday she will learn.</TD></TR></TABLE>
You, sir, would consumately enjoy the Boyd Rice song "Let's hear it for violence against women."
if she just did what i told her, i wouldnt have to beat her. i am sure someday she will learn.</TD></TR></TABLE>
You, sir, would consumately enjoy the Boyd Rice song "Let's hear it for violence against women."
09-26-2005, 11:11 AM
#38
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Re: (93turbo16)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93turbo16 »</TD></TR><TR><TD CLASS="quote">My car is also daily driver on 18psi, if I wouldn't have boost problems all the time. </TD></TR></TABLE>
alright this made my day...i think i'll get them now...yeah cheap pistons...
alright this made my day...i think i'll get them now...yeah cheap pistons...
09-27-2005, 09:16 AM
#41
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Re: (fjt)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fjt »</TD></TR><TR><TD CLASS="quote">Well a friend dynoed last night 284whp and 272lbs/ft on a Civic HX
Very Small t3 (.42/.48) 20PSI</TD></TR></TABLE>
got a dyno sheet? I'd like to see that curve
Very Small t3 (.42/.48) 20PSI</TD></TR></TABLE>
got a dyno sheet? I'd like to see that curve
09-27-2005, 11:48 AM
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Re: (HiProfile)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile »</TD></TR><TR><TD CLASS="quote">With the D16Y5 head? If so, thats very nice. Either way, 20psi and not melting is about where I'd like to be with my next build. 
</TD></TR></TABLE>
Yes..with the Y5 head
It was tuned on AEM EMS though...
</TD></TR></TABLE>Yes..with the Y5 head
It was tuned on AEM EMS though...
09-27-2005, 12:47 PM
#46
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Re: (fjt)
Do you have more specs on the build? thanks
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fjt »</TD></TR><TR><TD CLASS="quote">
Yes..with the Y5 head
It was tuned on AEM EMS though...</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fjt »</TD></TR><TR><TD CLASS="quote">
Yes..with the Y5 head
It was tuned on AEM EMS though...</TD></TR></TABLE>
09-28-2005, 03:58 AM
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from the top of my head.
Y5(HX motor) and Tranny
Vitara Pistons with PG6 rods
Bosch fuel pump
AEM Fuel Rail
AEM FPR
Block Guard
Log manifold(custom made)
Volvo T3(Garret .42/.48)
Tial 35mm WG
DSM 450cc injectors
2.5" Downpipe and exhaust with a Greddy muffler/axleback
HKS SSQ BOV
AEM EMS(previously tuned with VAFC)
Spearco Intercooler
I dont know the diameter of charge pipes but i think its 2.25"
Before tunning with the AEM the car ran on VAFC tunning and ran 12.5 @ 110mph on slicks with Full interior/AC and Power steering hooked up and working.
Y5(HX motor) and Tranny
Vitara Pistons with PG6 rods
Bosch fuel pump
AEM Fuel Rail
AEM FPR
Block Guard
Log manifold(custom made)
Volvo T3(Garret .42/.48)
Tial 35mm WG
DSM 450cc injectors
2.5" Downpipe and exhaust with a Greddy muffler/axleback
HKS SSQ BOV
AEM EMS(previously tuned with VAFC)
Spearco Intercooler
I dont know the diameter of charge pipes but i think its 2.25"
Before tunning with the AEM the car ran on VAFC tunning and ran 12.5 @ 110mph on slicks with Full interior/AC and Power steering hooked up and working.
09-28-2005, 08:13 AM
#48
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Re: (splitime)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime »</TD></TR><TR><TD CLASS="quote">Unless i sneak to a dyno first... my first set of numbers will be with a t3 .60/.63 (not my 14b) and a mitsu 7cm exhaust housing.</TD></TR></TABLE>
And ignore this... found out that bullseye does NOT make a mitsu housing for the 60/63
So it'll be cranking the crap out of the 14b again.
And ignore this... found out that bullseye does NOT make a mitsu housing for the 60/63
So it'll be cranking the crap out of the 14b again.
09-28-2005, 08:29 AM
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Re: (93turbo16)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93turbo16 »</TD></TR><TR><TD CLASS="quote">I know someone makes one with a .63 exhaust side. You could always go the super 16g route like I did. Spool is late, but power is great.</TD></TR></TABLE>
Well it wasn't bullseye and i'm not familiar with any others... if you can find it let me know.
I would go 16g... but i can find the 60/63s in great shape all day long... I can't find the 16gs like that... especially for a reasonable price.
Well it wasn't bullseye and i'm not familiar with any others... if you can find it let me know.
I would go 16g... but i can find the 60/63s in great shape all day long... I can't find the 16gs like that... especially for a reasonable price.