Rebuild 8V-71

treeplanter · April 21, 2018, 06:52:52 PM

I need to have my engine looked at and more than likely rebuilt, we live in North Idaho and asking you fellow bus folks for recommendations as where we could find a reputable shop not to far away to work on our 71 fishbowl 8V-71. Thank you for your help.

Bill Gerrie · April 21, 2018, 08:10:21 PM

They are not that hard to rebuild. Have you considered rebuilding it yourself? I am too far away to help but I have done several over the years.

treeplanter · April 21, 2018, 10:20:25 PM

I have not considered that, right now I have so many projects to do im looking for a shop to do it.

luvrbus · April 22, 2018, 06:16:46 AM

Hillsboro Diesel in Hillsboro OR would be my choice maybe 300 or 400 miles from you

TomC · April 22, 2018, 07:42:32 AM

Like my AMGeneral, you're fishbowl's engine & transmission is on a cradle. Takes about 2 hours to get the entire assembly out-once out is much easier to overhaul the engine. Cliff's suggestion is a good one. Maybe consider turboing the engine now. Good Luck, TomC

treeplanter · April 22, 2018, 07:48:07 AM

Would a turbo help with hills?

treeplanter · April 22, 2018, 08:12:45 AM

Thank you Cliff I'll call them. About an eight hour trip away.

richard5933 · April 22, 2018, 08:58:19 AM

I've had a pretty good relationship with the Interstate location here in Wisconsin, and I believe that they have a location in Billings, Montana. Doesn't seem too far away from Idaho. I believe that Interstate is a DD dealer, and from what I've seen here in Wisconsin they have techs familiar with buses and two strokes.

There is a great video log of the Technomadia folks getting the 8V71 in their 4106 rebuilt while they camped in the Interstate parking lot for a while. Might be worth a call.

http://www.technomadia.com/2013/08/rebuilding-an-8v-71-detroit-diesel-engine/

chessie4905 · April 22, 2018, 09:48:24 AM

I assume you are prepared for the cost to do a rebuild on your engine?

treeplanter · April 22, 2018, 10:36:00 AM

Thinking around 20,000?

luvrbus · April 22, 2018, 10:43:13 AM

Hillsboro will be under 20 and Interstate will be well over 20 grand,you can probably save more if you are not in hurry by letting Hillsboro do it on a fill in when they are not over run with work

treeplanter · April 22, 2018, 02:36:38 PM

Ok, sounds like Hillsboro is the choice, thanks for the tip.

TomC · April 22, 2018, 06:47:26 PM

N65 injectors will get you 308hp and 800lb/ft torque with horsepower reduction as you go up in altitude. My engine with 7G75 injectors, air to air intercooling, bypass blower gets 375hp and 1125lb/ft torque. Nearly 30% more pulling power. If you rebuild your engine to turbo specs with lower compression 2 piece pistons, with 7G80 injectors you can get 400hp and 1200lb/ft torque. And believe me, the performance is truly different, but fuel mileage is about the same. Good Luck, TomC

eagle19952 · April 22, 2018, 07:00:07 PM

Quote from: TomC on April 22, 2018, 06:47:26 PM
N65 injectors will get you 308hp and 800lb/ft torque with horsepower reduction as you go up in altitude. My engine with 7G75 injectors, air to air intercooling, bypass blower gets 375hp and 1125lb/ft torque. Nearly 30% more pulling power. If you rebuild your engine to turbo specs with lower compression 2 piece pistons, with 7G80 injectors you can get 400hp and 1200lb/ft torque. And believe me, the performance is truly different, but fuel mileage is about the same. Good Luck, TomC

but the $$'s double.

chessie4905 · April 23, 2018, 04:09:21 AM

and heat issues.