You can use a Y iron in a R5 engine...

-xlr8planet- · 11-29-2008, 09:32 PM

As long as its a middle iron

what you CANNOT mix, its front and rear irons

New apex seal vs. used apex seal. The triangular piece is new on both

YES, you can use a middle Y irong in a R5 engine.

Porrrrrrrrrrrting

Whizbang · 11-30-2008, 10:22 AM

not exactly familiar with "R5". What is that referring to exactly

-xlr8planet- · 11-30-2008, 11:12 AM

Quote:

Originally Posted by Low Impedance

not exactly familiar with "R5". What is that referring to exactly

R5 is the designation for the 79/80 12A irons.

Y is the designation for the 81/85 irons.

R5 engines use 18 tension bolts

Y engines only use 17

There are small changes depending on what market the engine was going to.

Jeff20B · 12-09-2008, 01:53 PM

I have various R5 rear plates with 19,18 and 17 tension bolts. It depends on the year they were made. Most nitrided ones lack an oil pressure hole so it takes a steady hand and lots of patience to drill and cut threads.

Whizbang · 12-09-2008, 01:56 PM

am i looking at it wrong, or is the tension bolt going to be exposed in the water jacket?

Jeff20B · 12-09-2008, 02:09 PM

A Y intermediate can't be used with all 19 tension bolts because the casting apparently won't allow it.

-xlr8planet- · 12-10-2008, 06:15 AM

Quote:

Originally Posted by Jeff20B

A Y intermediate can't be used with all 19 tension bolts because the casting apparently won't allow it.

I only have 18 tension bolts on my R5...

see

and I placed a black X where the tension bolt that the Y iron does not support should be.

-xlr8planet- · 12-10-2008, 06:18 AM

On the R5 middle iron, (blue mark) you have a tension bolt hole.
On the Y iron (red mark) you dont, its all water.

On the rear R5 iron, you DONT have the tension bolt hole

So I guess it doesnt matter.

11-29-2008, 09:32 PM	#1
-xlr8planet- RCC Contributor Join Date: Feb 2008 Location: Buenos Aires, Argentina iTrader: (4) Posts: 679 Rep Power: 17	You can use a Y iron in a R5 engine... As long as its a middle iron what you CANNOT mix, its front and rear irons New apex seal vs. used apex seal. The triangular piece is new on both YES, you can use a middle Y irong in a R5 engine. Porrrrrrrrrrrting __________________ www.rx7club.com.ar RX-7 Forum in Spanish I make custom decals. Yes, you can ask me

11-30-2008, 10:22 AM	#2
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	not exactly familiar with "R5". What is that referring to exactly __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

12-09-2008, 01:56 PM	#5
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	am i looking at it wrong, or is the tension bolt going to be exposed in the water jacket? __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

12-10-2008, 06:18 AM	#8
-xlr8planet- RCC Contributor Join Date: Feb 2008 Location: Buenos Aires, Argentina iTrader: (4) Posts: 679 Rep Power: 17	On the R5 middle iron, (blue mark) you have a tension bolt hole. On the Y iron (red mark) you dont, its all water. On the rear R5 iron, you DONT have the tension bolt hole So I guess it doesnt matter. __________________ www.rx7club.com.ar RX-7 Forum in Spanish I make custom decals. Yes, you can ask me

12-09-2008, 01:53 PM	#4
Jeff20B Rotary Fanatic Join Date: Mar 2008 iTrader: (1) Posts: 215 Rep Power: 17	I have various R5 rear plates with 19,18 and 17 tension bolts. It depends on the year they were made. Most nitrided ones lack an oil pressure hole so it takes a steady hand and lots of patience to drill and cut threads.

12-09-2008, 02:09 PM	#6
Jeff20B Rotary Fanatic Join Date: Mar 2008 iTrader: (1) Posts: 215 Rep Power: 17	A Y intermediate can't be used with all 19 tension bolts because the casting apparently won't allow it.