f2t pistons in fe3 - Page 6

**fredio54** · 11-19-07, 3:52

Quote:

Originally Posted by chief tool

Yes I did mean SOHC....I usually refer to the DOHC as the FE3

good man, lots dont and i find it a bit annoying :-)

**SixSick6** · 11-19-07, 4:08

http://www.mx6.com/forums/1g-mx6-oth...n-chamber.html (P&P on my combustion chamber...)

Julios pistons were .040 over 87mm for the GT. Not forged so the compression ratio of the pistons themselves wasn't known when he ordered them.

**chief tool** · 11-19-07, 5:13

Interesting....I never knew about the perspex trick, i usually use steel ruler on edge across the face, and when the fluid touches the edge its on the money.

I like the pipette as it measures the amount of fluid going in to the space....it's way more accurate than you need for compression, maybe not for NASCAR rules.

I'll have too keep those figures written down. head 49cc, turbo piston dish 25cc

when I back check my figures against those....if there was no head gasket thickness taken into account, the figures from the thread sick added would indicate a c/r of 8.38, but we know its 7.8 according to the factory.

according to my figure of 17.8cc using 49cc for head volume I get a c/r of 9.17, which is 0.79 points higher...

the factory c/r of 8.6 is 0.8 points higher than the turbo, so I'd say my measurements are pretty accurate.

**SixSick6** · 11-19-07, 5:17

No, read it again, 87mm aftermarket piston.

defiler · 11-19-07, 12:51

Quote:

Is there any chance you'd be willing to CC those pistons? A medicine syrine and water with food coloring is all you'd need. (just clean them up, pour the water in the dish and pull it back out with a syringe, then tell us the numbers)

Has anyone done this yet? I didnt see anywhere in here where they did...

If so, I can do it tomorrow with my old set of F2t pistons.

**fredio54** · 11-19-07, 12:56

go for it anyway, a cross ref of one dodgy internet dude against another is always a good thing to have

**Zach** · 11-19-07, 13:34

This is some inherently interesting developments

**chief tool** · 11-19-07, 21:09

Quote:

Originally Posted by SixSick6

No, read it again, 87mm aftermarket piston.

tried to read it quickly, must have missed that bit....but if they were meant to be OEM replacements, the manufacturer would have tried to keep the specs as close to factory as possible.

**chief tool** · 11-19-07, 21:11

Quote:

Originally Posted by fredio54

go for it anyway, a cross ref of one dodgy internet dude against another is always a good thing to have

yes.......there is nothing like measuring it yourself to confirm when the time comes. all the figures I would take as a guide only.

**fredio54** · 11-20-07, 5:39

I wasnt implying that you were dodgy :-) just that the more measurements that confirm the same figure are available, the better :-)

**bakmans** · 12-9-07, 7:48

i have some pistons laying around here.

have my f2t pistons, my fe3 pistons my sr20det pistons and have casejunkies f2 pistons.
anyone need some pics or specs just tell me and i'll post them

**SixSick6** · 12-9-07, 19:43

I've been waiting to see CC values for the F2 vs F2T pistons since forever so yes..please CC them. Karma will be waiting.

**chief tool** · 12-9-07, 21:27

I did the F2 ones, but I dont have a set of F2T ones except for the ones in the engine thats in the car ATM..

over the holiday period, i'll speak to my mate who runs a yard and see if he has any junkers that I can have for free to measure.

**SixSick6** · 12-9-07, 21:29

So how many CC were they? ( I missed that) and were they the stock 86mm bore?

**chief tool** · 12-10-07, 1:33

F2 = 17.8cc

And yes they were out of a standard bore...

11-19-07, 12:56	#81 (permalink)
fredio54 Join Date: Aug 2004 Location: Auckland, New Zealand iTrader: (1)	go for it anyway, a cross ref of one dodgy internet dude against another is always a good thing to have
	DIYEFI.org - TRUE DIY engine management Mazda FE3/FE-DOHC Master Index Thread (work in progress) Mazda truck with FE-DOHC/FE3 "BIG like your house" Holset Turbo drinking 2.2 litres of fuel per minute ~= 385hp crank RIP SleepCounter :-( we will miss you! - RIP fredio54 :-( will we miss you?

11-19-07, 13:34	#82 (permalink)
Zach All aboard the B& V& Join Date: Nov 2004 Location: Age: 32 iTrader: (8)	This is some inherently interesting developments
	Squirted 1g GT - T04E 57trim - 550's - Deltamark II External WG - P/S+A/C Delete - Four Vacuum Lines - Open Dump - 18psi

11-20-07, 5:39	#85 (permalink)
fredio54 Join Date: Aug 2004 Location: Auckland, New Zealand iTrader: (1)	I wasnt implying that you were dodgy :-) just that the more measurements that confirm the same figure are available, the better :-)
	DIYEFI.org - TRUE DIY engine management Mazda FE3/FE-DOHC Master Index Thread (work in progress) Mazda truck with FE-DOHC/FE3 "BIG like your house" Holset Turbo drinking 2.2 litres of fuel per minute ~= 385hp crank RIP SleepCounter :-( we will miss you! - RIP fredio54 :-( will we miss you?

11-19-07, 4:08	#77 (permalink)
SixSick6 Join Date: Sep 2001 Location: San Diego, CA, USA Age: 32 iTrader: (2)	http://www.mx6.com/forums/1g-mx6-oth...n-chamber.html (P&P on my combustion chamber...) Julios pistons were .040 over 87mm for the GT. Not forged so the compression ratio of the pistons themselves wasn't known when he ordered them.

11-19-07, 5:13	#78 (permalink)
chief tool Join Date: Feb 2006 Location: Sydney, Australia Age: 36 iTrader: (2)	Interesting....I never knew about the perspex trick, i usually use steel ruler on edge across the face, and when the fluid touches the edge its on the money. I like the pipette as it measures the amount of fluid going in to the space....it's way more accurate than you need for compression, maybe not for NASCAR rules. I'll have too keep those figures written down. head 49cc, turbo piston dish 25cc when I back check my figures against those....if there was no head gasket thickness taken into account, the figures from the thread sick added would indicate a c/r of 8.38, but we know its 7.8 according to the factory. according to my figure of 17.8cc using 49cc for head volume I get a c/r of 9.17, which is 0.79 points higher... the factory c/r of 8.6 is 0.8 points higher than the turbo, so I'd say my measurements are pretty accurate.

11-19-07, 5:17	#79 (permalink)
SixSick6 Join Date: Sep 2001 Location: San Diego, CA, USA Age: 32 iTrader: (2)	No, read it again, 87mm aftermarket piston.

12-9-07, 7:48	#86 (permalink)
bakmans Join Date: Mar 2006 Location: uden, holland Age: 27 iTrader: (1)	i have some pistons laying around here. have my f2t pistons, my fe3 pistons my sr20det pistons and have casejunkies f2 pistons. anyone need some pics or specs just tell me and i'll post them

12-9-07, 19:43	#87 (permalink)
SixSick6 Join Date: Sep 2001 Location: San Diego, CA, USA Age: 32 iTrader: (2)	I've been waiting to see CC values for the F2 vs F2T pistons since forever so yes..please CC them. Karma will be waiting.

12-9-07, 21:27	#88 (permalink)
chief tool Join Date: Feb 2006 Location: Sydney, Australia Age: 36 iTrader: (2)	I did the F2 ones, but I dont have a set of F2T ones except for the ones in the engine thats in the car ATM.. over the holiday period, i'll speak to my mate who runs a yard and see if he has any junkers that I can have for free to measure.

12-9-07, 21:29	#89 (permalink)
SixSick6 Join Date: Sep 2001 Location: San Diego, CA, USA Age: 32 iTrader: (2)	So how many CC were they? ( I missed that) and were they the stock 86mm bore?

12-10-07, 1:33	#90 (permalink)
chief tool Join Date: Feb 2006 Location: Sydney, Australia Age: 36 iTrader: (2)	F2 = 17.8cc And yes they were out of a standard bore...