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General Category => General Discussion => Topic started by: T4halo on March 01, 2019, 12:28:27 PM

Title: HP difference between round head 850 vs 1000
Post by: T4halo on March 01, 2019, 12:28:27 PM

I’m comparing the standard 850 T/T3 motor to the 1000 SP/G5. I know there is only 100cc difference but would like to hear real world comparison. The numbers are pretty close from what I’ve read. Many here have had both.

T4

Title: Re: HP difference between round head 850 vs 1000
Post by: Perazzimx14 on March 01, 2019, 01:12:55 PM

Going by numbers posted on the internet the 850T (844cc) produces about 55hp. The SP1000 (948cc) produces about 61hp in stock trim. I think they mean Clydesdale verses Quarter Horse Horse power  when referencing Guzzi.

Title: Re: HP difference between round head 850 vs 1000
Post by: mtiberio on March 01, 2019, 01:14:41 PM

What kind of differences? Dimensional? Horsepower? Torque? The heads are the same AFAIK. The holes in the block for the cylinders are about .020" bigger on a 950 motor.

Title: Re: HP difference between round head 850 vs 1000
Post by: T4halo on March 01, 2019, 01:28:32 PM

I understand it's a bigger bore, but didn't know the heads were the same.  6 HP might  make a small difference.  Both are good motors.

Title: Re: HP difference between round head 850 vs 1000
Post by: pete roper on March 01, 2019, 01:30:57 PM

83 vs. 88 mm bore. The 950 makes a little more torque and vibrates slightly more. If you really wring them out the 950 may make a tiny bit more power but the real limiting factor is the port size and carburettor choke size.

Title: Re: HP difference between round head 850 vs 1000
Post by: travelingbyguzzi on March 01, 2019, 08:58:44 PM

I have always felt ,in my limited experience, two of each, that the 850 was smoother. Maybe a bit less bottom end, but I have always likes the 850s.

Title: Re: HP difference between round head 850 vs 1000
Post by: guzzista on March 02, 2019, 04:03:51 PM

Quote from: travelingbyguzzi on March 01, 2019, 08:58:44 PM

I have always felt ,in my limited experience, two of each, that the 850 was smoother. Maybe a bit less bottom end, but I have always likes the 850s.

+1

Title: Re: HP difference between round head 850 vs 1000
Post by: Chuck in Indiana on March 03, 2019, 07:12:58 AM

Yeah.. me, too.