My 86' Turbo wagon engine is nearly worn out and I have an 86' carbed engine with only 120K on it. Can I bolt the Turbo stuff onto the carbed long block or are they set up differently for turbo?
Thanks
Have Fun!
Corbin
Welcome to Ultimate Subaru Message Board, my lurker friend!
 |
Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created. We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
* The joy of participation and being generally awesome constitutes winning ** Not an actual guarantee, but seriously, you probably won't regret it! Serving the Subaru Community since May 18th, 1998! |
Guest Message by DevFuse
Carb Vs Turbo Long Block
Started by
Subarunner
, Oct 20 2004 10:27 AM
10 replies to this topic
#2
WJM
-
- Members
- 7,828 posts
SUBARU
Posted 20 October 2004 - 11:15 AM
everything will bolt up. Be careful aobut timing and run premium gas.
the only mod is the rear block PCV vent is not present on CARB/SPFI blocks...so you will ahve to block that off for the turbo stuff on the manifold. Easy peasy fix.
the only mod is the rear block PCV vent is not present on CARB/SPFI blocks...so you will ahve to block that off for the turbo stuff on the manifold. Easy peasy fix.
#3
subaru_styles
-
- Members
- 1,695 posts
the 1st RX wagon!
- OMGhi2U in da couve
Posted 20 October 2004 - 11:47 AM
do it..
wow, these turbo carb blocks are starting to become more popular.
wow, these turbo carb blocks are starting to become more popular.
#4
calebz
-
- Administrator
-
- 7,547 posts
Andys Coupe killed my cat
- Tacoma
Posted 20 October 2004 - 12:56 PM
A little clarification
The turbo stuff will NOT bolt on to a carb long block.
It will however, work on a carb shortblock.
You need to use the turbo heads and associated stuff.
The turbo stuff will NOT bolt on to a carb long block.
It will however, work on a carb shortblock.
You need to use the turbo heads and associated stuff.
#5
Snowman
-
- Members
- 3,538 posts
Midnight Passenger
- Haines
Posted 20 October 2004 - 02:13 PM
I don't want to sound like a naysayer, but for the sake of informedness and since there is the possibility that I could pursue a similar setup in the near future, what is the longest that one of these turbo-on-carb-block engines has held together? The most long-lived one I know of is WJM's, which was good for something like 20k.
#6
subaru_styles
-
- Members
- 1,695 posts
the 1st RX wagon!
- OMGhi2U in da couve
Posted 20 October 2004 - 02:23 PM
wjm used a spfi block, BIG difference in compression there. the carb block is just slightly higher than [turbo] stock
#7
WJM
-
- Members
- 7,828 posts
SUBARU
Posted 20 October 2004 - 02:52 PM
A little clarification
The turbo stuff will NOT bolt on to a carb long block.
It will however, work on a carb shortblock.
You need to use the turbo heads and associated stuff.
Oh, i missed that LONG/SHORT block part...NO..wont fit LONG block...but will SHORT block.
I don't want to sound like a naysayer, but for the sake of informedness and since there is the possibility that I could pursue a similar setup in the near future, what is the longest that one of these turbo-on-carb-block engines has held together? The most long-lived one I know of is WJM's, which was good for something like 20k.
24k miles.
s_s: Yes, 9.5:1 as compared ot 8.5:1 is ALOT in turbo world....I still dont see how the shortblocks have different compression ratios....as the P#'s were the same the last time I looked them up....
#8
subaru_styles
-
- Members
- 1,695 posts
the 1st RX wagon!
- OMGhi2U in da couve
Posted 20 October 2004 - 03:21 PM
s_s: Yes, 9.5:1 as compared ot 8.5:1 is ALOT in turbo world....I still dont see how the shortblocks have different compression ratios....as the P#'s were the same the last time I looked them up....
please correct me if I'm wrong, but isn't it mostly the pistons that create the compression differences.
#9
calebz
-
- Administrator
-
- 7,547 posts
Andys Coupe killed my cat
- Tacoma
Posted 20 October 2004 - 04:30 PM
s_s: Yes, 9.5:1 as compared ot 8.5:1 is ALOT in turbo world....I still dont see how the shortblocks have different compression ratios....as the P#'s were the same the last time I looked them up....
No, the part numbers are different.. This came up a while back and I actually posted the part numbers. It is 100% the pistons that make the difference between the ranges of compression in EA82 motors. IIRC, I posted P/Ns for 1987, as it was the only full production year with all three fuels systems in the US.
Basically it is like this
Piston tops:
Turbo - concaved
carb - Flat
SPFI - convex
#10
NorthWet
-
- Members
- 4,616 posts
Eeyore Incarnate
- Bremerton, WA
Posted 20 October 2004 - 05:10 PM
I don't want to sound like a naysayer, but for the sake of informedness and since there is the possibility that I could pursue a similar setup in the near future, what is the longest that one of these turbo-on-carb-block engines has held together? The most long-lived one I know of is WJM's, which was good for something like 20k.
Gee, so if/when I build my turbo-on-SPFI-block, all I have to do is last more than 20k to be considered a success?
#11
Subarunner
-
- Members
-
- 17 posts
New User
- Yucca Valley
Posted 20 October 2004 - 07:24 PM
Thanks for the great info everyone!
I think I go ahead with the Turbo on carb short block and drive the crap out of it while I put together another turbo motor on the side.
Have Fun!
Corbin
I think I go ahead with the Turbo on carb short block and drive the crap out of it while I put together another turbo motor on the side.
Have Fun!
Corbin
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
