Jump to content


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*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* 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
 

Photo
- - - - -

Turbo for offroad


  • Please log in to reply
24 replies to this topic

#1 Scott in Bellingham

Scott in Bellingham

    Lets go wheelin!!

  • Members
  • 3,576 posts
  • Bellingham

Posted 15 September 2005 - 10:22 AM

on the turbo cars how do they differ from non turbo for offroad, how do they act in the low rpm range? I notice the comp ratio is lower whats that do for you, anyone got a turbo they offroad? hows it preform compared to spfi? Scott

#2 NoahDL88

NoahDL88

    Elite Master of Cookies

  • Members
  • 4,264 posts
  • Bremerton, WA, USA

Posted 15 September 2005 - 10:48 AM

I've never offroaded a turbo, but i've driven enough turbo's to know that i'd rather not have one offroad, the lower compression means its a dog until the turbo comes on, which means no crawling. when the turbo comes on it comes on hard, which may offset the delicate ballance of traction and momentum. if you're looking at more of a rock runner, when you have higher rpm and are using an auto tranny, it would work better, but for the typical "Hatch Patrol" type stuff, i can't see a turbo being an advantage. I guess in the end it all boils down to personal preference.

#3 archemitis

archemitis

    guy smiley

  • Members
  • 3,554 posts
  • the big minnie

Posted 15 September 2005 - 10:53 AM

turbos are not for offroading. im sure somebody will post some pics of those wrx powered rock crawlers, but thats not us.

ej, or er is the only way for big hp offroading.

spfi and mpfi and even carbs work well too

#4 LosDiosDeVerde86

LosDiosDeVerde86

    1000+ Super USER!

  • Members
  • 1,346 posts
  • Columbus

Posted 15 September 2005 - 11:28 AM

turbos are not for offroading. im sure somebody will post some pics of those wrx powered rock crawlers, but thats not us.

ej, or er is the only way for big hp offroading.

spfi and mpfi and even carbs work well too


you say big horses with an EJ???

i've got the EJ22 and have very small horses...miniature ponies if you will.

what are you doing to get big hp out of an EJ?

#5 MSSLGECKO

MSSLGECKO

    I miss picture signatures

  • Members
  • 755 posts
  • Missoula

Posted 15 September 2005 - 11:53 AM

...miniature ponies if you will.

LOL. I think he's just pointing out that anyone w/ an EA can double their HP w/ an EJ.

I off-road a turbo. I love it. W/ the lower compression ratio and not boosting, you definately are making less power & torque then the NA's. However, when you are boosting you are making a lot of power (IIRC, EA81T is rated @ 127HP and ~9#TQ). I personally like to hit things w/ some speed and throttle.

I would say that a D/R is a must for the turbo's and offroading. I think it's a blast.

#6 ezapar

ezapar

    [OWB]

  • Moderator
  • 27,081 posts
  • Seattle

Posted 15 September 2005 - 12:09 PM

you say big horses with an EJ???


what are you doing to get big hp out of an EJ?


How about this?
http://rallitekforum...23370#post23370

#7 operose

operose

    1000+ Super USER!

  • Members
  • 1,264 posts
  • Potsdam

Posted 15 September 2005 - 12:53 PM

How about this?
http://rallitekforum...23370#post23370


looks good to me!

#8 archemitis

archemitis

    guy smiley

  • Members
  • 3,554 posts
  • the big minnie

Posted 15 September 2005 - 12:59 PM

you say big horses with an EJ???

i've got the EJ22 and have very small horses...miniature ponies if you will.

what are you doing to get big hp out of an EJ?


150hp is BIG PIMPIN in an ea car.

even with alot of hp you still have to hit stuff at speed with any subaru offroad. they will never crawl without alot of work/parts =[

#9 Vanislru

Vanislru

    Durka Durka!

  • Members
  • 791 posts
  • Cumberland, BC

Posted 15 September 2005 - 03:14 PM

Subes with the stock drivetrain don't crawl they jog.
Mines a turbo, the only drawback I've found is that in technical sections on inclined rock the gearing coupled with the lower compression you have to ride the clutch a bit from a dead stop. Not a big deal once or twice but after that you start to have a bit of clutch slip from heat. I've got a SPFI block ready to go with a turbo setup on it and this will be much better.
But the gearing is still a prob. for all of us.
Scott I will ring you when I'm coming down to Victoria next and maybe I could meet you at the ferry. Corey [Bushbasher] has a wicked acerage with tons of huge rock bluffs and old road bed maybe we could wheel there? I could head to the US too.

#10 Vanislru

Vanislru

    Durka Durka!

  • Members
  • 791 posts
  • Cumberland, BC

Posted 15 September 2005 - 03:20 PM

150hp is BIG PIMPIN in an ea car.

You mean off idle/low rpm's right? Cause I've got over that and then some but it's at 2500rpm, problem is there's only about half that off the line. The SPFI block will help alot but like you said it's the gears.

#11 MorganM

MorganM

    Do you Subaru?

  • Members
  • 8,390 posts
  • TwinCities

Posted 15 September 2005 - 04:01 PM

You mean off idle/low rpm's right?


Yes, Low end torque is key. Not top end HPs. I couldnt imagine offroading with less low end than my SPFI :eek:

#12 Scott in Bellingham

Scott in Bellingham

    Lets go wheelin!!

  • Members
  • 3,576 posts
  • Bellingham

Posted 15 September 2005 - 06:53 PM

Subes with the stock drivetrain don't crawl they jog.
Mines a turbo, the only drawback I've found is that in technical sections on inclined rock the gearing coupled with the lower compression you have to ride the clutch a bit from a dead stop. Not a big deal once or twice but after that you start to have a bit of clutch slip from heat. I've got a SPFI block ready to go with a turbo setup on it and this will be much better.
But the gearing is still a prob. for all of us.
Scott I will ring you when I'm coming down to Victoria next and maybe I could meet you at the ferry. Corey [Bushbasher] has a wicked acerage with tons of huge rock bluffs and old road bed maybe we could wheel there? I could head to the US too.


Van do you have the stock final gearing 3.7?

#13 subie94

subie94

    Major Subaru Fan..

  • Members
  • 1,583 posts
  • Epsom,N.H.

Posted 15 September 2005 - 07:04 PM

Van do you have the stock final gearing 3.7?


wish i did,all i have is 4.11 for gears...

back when i had my gl-10.i used to take it through mud.that's all

i'd get the rpms up till turbo would kick in then go.

interesting getting a four wheel rooster going.:brow:

#14 Vanislru

Vanislru

    Durka Durka!

  • Members
  • 791 posts
  • Cumberland, BC

Posted 15 September 2005 - 11:10 PM

Van do you have the stock final gearing 3.7?

3.90 with the low range. When the house on Van Isl sells[Sept 30th closing date wahoo!] I'm going to sort out some lower gearing. 4.1's or 4.44's if I can stuff them in the leone box.

#15 Vanislru

Vanislru

    Durka Durka!

  • Members
  • 791 posts
  • Cumberland, BC

Posted 15 September 2005 - 11:16 PM

Yes, Low end torque is key. Not top end HPs.

Kind of what I was getting at. HP is worthless, torque[specifically at idle] is what you need with the gearing too.
I've only wheeled the turbo until recently when I started wheelin' the spfi I bought. Great torque off the line, very impressed. I hope to have the spfi block&pistons/turbo hybrid in the car by the end of Oct.
Hhmm more torque.

#16 Ross

Ross

    Can't be bothered

  • Members
  • 1,865 posts
  • Christchurch, New Zealand

Posted 15 September 2005 - 11:23 PM

Really depends on the terrain you drive on. I find my ea81t is fine for mild offroading (cant do much more cos its lower than a standard 4wd!) - they still put out resonable torque at low revs and dont have a huge power surge when the turbo kicks in like some other engines do.
If your going over heaps of rocks etc, with lots of real slow stuff i'd definitely rather have a N/A enigne. You cant beat a turbo for playing in the mud though!

#17 Numbchux

Numbchux

    EJ conversion addict

  • Members
  • 5,983 posts
  • Duluth, MN

Posted 16 September 2005 - 12:03 AM

wish i did,all i have is 4.11 for gears...


ummm..4.11 is lower than 3.x, you're other forward gears might be higher, but it's not your final ratio...

#18 offroadsubaruguy

offroadsubaruguy

    Subaru Nut

  • Members
  • 727 posts
  • arvada, colorado

Posted 16 September 2005 - 08:29 AM

remember that a n/a ea car has at amx something like 90 hp, so an ej22 for say has around 140ish stock? so add a few things here and there and it would actually be pretty easy to get to at least 160-170 range......thats quite a jump from 90.....

#19 MorganM

MorganM

    Do you Subaru?

  • Members
  • 8,390 posts
  • TwinCities

Posted 16 September 2005 - 09:06 AM

Kind of what I was getting at. HP is worthless, torque[specifically at idle] is what you need with the gearing too.
I've only wheeled the turbo until recently when I started wheelin' the spfi I bought. Great torque off the line, very impressed. I hope to have the spfi block&pistons/turbo hybrid in the car by the end of Oct.
Hhmm more torque.


SPFI compression ratio + turbo would be sick offroad. I think you'll really dig that setup both on and off the road :brow:

#20 archemitis

archemitis

    guy smiley

  • Members
  • 3,554 posts
  • the big minnie

Posted 16 September 2005 - 09:26 AM

You mean off idle/low rpm's right? Cause I've got over that and then some but it's at 2500rpm, problem is there's only about half that off the line. The SPFI block will help alot but like you said it's the gears.


ya, off idle power is the coolest. like 1000 rpms =] with the big motor, its got more rotating mass, so it can crawl a little better than the 4 cylinder...

#21 carfreak85

carfreak85

    EA81T Sherpa

  • Members
  • 4,752 posts
  • Bell-something...

Posted 16 September 2005 - 11:33 AM

(IIRC, EA81T is rated @ 127HP and ~9#TQ)


95hp @ 4800rpm, 123lb/ft @ 2000rpm

#22 subie94

subie94

    Major Subaru Fan..

  • Members
  • 1,583 posts
  • Epsom,N.H.

Posted 16 September 2005 - 01:05 PM

ummm..4.11 is lower than 3.x, you're other forward gears might be higher, but it's not your final ratio...


now how would one figure out the final ratio? wouldn't the owners manual tell me what it is?

#23 Scott in Bellingham

Scott in Bellingham

    Lets go wheelin!!

  • Members
  • 3,576 posts
  • Bellingham

Posted 16 September 2005 - 06:41 PM

I brought my turbo home today . its a 87 gl wagon 119000 miles .silver totaly stock. runs on three cylinders .other then that everything seems to work even the A/C drove it over 45 minutes to get home never got hot didnt use any oil. not sure whats wrong with it scott

#24 Vanislru

Vanislru

    Durka Durka!

  • Members
  • 791 posts
  • Cumberland, BC

Posted 16 September 2005 - 09:39 PM

I brought my turbo home today . its a 87 gl wagon 119000 miles .silver totaly stock. runs on three cylinders .other then that everything seems to work even the A/C drove it over 45 minutes to get home never got hot didnt use any oil. not sure whats wrong with it scott

Maybe an injector?Nice score!

#25 Scott in Bellingham

Scott in Bellingham

    Lets go wheelin!!

  • Members
  • 3,576 posts
  • Bellingham

Posted 22 September 2005 - 11:43 AM

well I got the car , its a 87 Turbo 4wd, gos like a rocket on the road, ,

plans are to give it a SJR 6" lift , put some Super swampers on it , probably the 27 x 9.5 SSR
install dual range and swap out the rear diff to 3.9

once its up and going will sell my 88 I had at WCSS7 , this will be my tow rig to transport the " Utimate Offroader "




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users