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Shall I go 1170 or 1230


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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!

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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 by coombehouse
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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.

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

My daily GSX is 1260 in standard GSX block.

 

IMG_0319.thumb.JPG.5c8c3d0323de357fbaf307049948b4b4.JPG

 

IMG_0320.thumb.JPG.44837e91b63b320365ab08dbc36b89cf.JPG

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

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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.

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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 by Reinhoud
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