Shall I go 1170 or 1230

[Mike711]

My 1100et needs a rebore so can anyone who's tried both give their opinion on if it's worth the extra grief finding EFE barrels etc to put a 1230 in over 1170 on std barrels?

Do the EFE barrels drop straight into the ET crankcase?

It's just for road use but extra low down oomph is always welcome!

[GSX1100dreamn]

My daily GSX is 1260 in standard GSX block.

 

 

[Fazz711]

Personally prefer 1170

[coombehouse]

I have run 1133 (back in the 80's), 1290 from then until last year & now 1170. The 1133 kit was ok but only a little quicker, the 1290 kit had great torque but the downside was the need to bore the cases for the liners & the oil leaks that meant external oil lines were necessary. I would have gone 1230 as that would be a good compromise but I didn't have an efe barrel so 1170 it is now. The bike does have less bottom end but just revs forever. It feels very smooth too so its probably a good choice for less hassle.

Edited July 5, 2022 by coombehouse

[Mike711]

7 hours ago, coombehouse said:

I have run 1133 (back in the 80's), 1290 from then until last year & now 1170. The 1133 kit was ok but only a little quicker, the 1290 kit had great torque but the downside was the need to bore the cases for the liners & the oil leaks that meant external oil lines were necessary. I would have gone 1230 as that would be a good compromise but I didn't have an efe barrel so 1170 it is now. The bike does have less bottom end but just revs forever. It feels very smooth too so its probably a good choice for less hassle.

Many thanks, just the info I needed.

[Reinhoud]

1230cc

 

I've got a 1247cc on my GS1000, it's realy torquie from just below 2000rpm, I love it.

Edited July 6, 2022 by Reinhoud

[wraith]

1 hour ago, Reinhoud said:

1230cc

 

I've got a 1247cc on my GS1000, it's realy torquie from just below 2000rpm, I love it.

What piston's you using?

[Reinhoud]

11 hours ago, wraith said:

What piston's you using?

JE 

 

Mine don't come from here.

But this guy sells a lot of go fast stuff

http://www.dynoman.net/engine/pistons/index.html

[Reinhoud]

On 7/4/2022 at 6:05 PM, GSX1100dreamn said:

My daily GSX is 1260 in standard GSX block.

 

 

What CR do you have?

 

No clue how it is with the GSX, but the higher CR on the GS did a bit. This was with a 1085cc kit.

Now I've got a 1247cc with lower CR, and that has quite a bit of poke before boost comes in. But hard to say with the 1085 kit if it was the higher CR or more displcement, most likely a bit of both.

 

What I did learn, performance cams on a stock CR makes your bike slower instead of faster

[GSX1100dreamn]

Standard 10.25 cr.

standard cams but degreed in at 106 deg.

Was looking at commuter street rideability that is why the specs are a bit tame just splashed out on CC.

[GSX1100dreamn]

7 hours ago, GSX1100dreamn said:

Standard 10.25 cr.

standard cams but degreed in at 106 deg.

Was looking at commuter street rideability that is why the specs are a bit tame just splashed out on CC.

The 10 km commute to work consists of,

 

5 km at 70 km/h streets 4th gear 3500rpm/ 5th 300rpm.

 

5 km at 50 km/h streets 3rd gear 3250 rpm.

 

Yawn.

 

The weekend parked in a garage waiting for Monday.

[Reinhoud]

On 7/11/2022 at 4:47 AM, GSX1100dreamn said:

Standard 10.25 cr.

standard cams but degreed in at 106 deg.

Was looking at commuter street rideability that is why the specs are a bit tame just splashed out on CC.

Have you been experimenting with different deree settings of the cams?

106 is about standard, isn't it?

 

I have a little bit with mine, and on my bike the engine ran at it's best at stock setting. If I set the timing different the bike got sluggish, slow throttle response

Edited July 14, 2022 by Reinhoud