Author Topic: How to tell a 1397 (Read 14436 times) Tweet

firemanjim · « **on:** March 31, 2011, 02:58:59 PM »

Bought myself a 2005 Busa and seller says it has a 1397 kit in it. Any way externally to tell if he is correct?

sportbikeryder · « **Reply #1 on:** March 31, 2011, 03:38:27 PM »

Put it on a dyno.

BATTMAN · « **Reply #2 on:** March 31, 2011, 04:12:26 PM »

You really cant tell without taking the head off or putting it on a dyno. How much hp did the seller claim the bike made. If he claims it made over 210hp or so, he probably had headwork done too. You can pull the exhaust off to see if its been ported. You can also check on the back of the head to see if the head is labeled by the porter. Carpenter stamps the head on the back right side.

firemanjim · « **Reply #3 on:** March 31, 2011, 04:25:58 PM »

So far with some ECU tuning it is only at 166.More to come.Stock filter/airbox/Yosh slip ons.

bigbill1441 · « **Reply #4 on:** March 31, 2011, 04:31:20 PM »

If you are saying It has 166 hp I would say definetly not a 1397.

sportbikeryder · « **Reply #5 on:** March 31, 2011, 05:49:22 PM »

Well, I would be inclined to agree that it isn't a big bore motor. That said, the tune could be shitty or the cams could be installed incorrectly and a 1397 could make 166. without headwork and cams an 84mm bore motor pretty much sucks. Not as low as 166 typically, but still crappy.

firemanjim · « **Reply #6 on:** April 01, 2011, 12:11:50 AM »

Thought as much,not inclined to tear into it to see. Truth be told I would prefer a stocker for daily ride.Damn thing still has pair valve and stock air cleaner.

J.R. · « **Reply #7 on:** April 01, 2011, 06:27:23 AM »

Quote from: firemanjim on March 31, 2011, 04:25:58 PM

So far with some ECU tuning it is only at 166.More to come.Stock filter/airbox/Yosh slip ons.

If it's been on the dyno what are the torque numbers? A typical stock bore would be around 100 ft-lbs. Jump in here Jon! 1397 should be closer to 110 ft-lbs. regardless of HP.

BATTMAN · « **Reply #8 on:** April 01, 2011, 08:33:01 AM »

If it has the pair valve on it, thats a good indicator that the motor hasnt been rebuilt. Most builders wouldnt put that stuff back on during a rebuild.

firemanjim · « **Reply #9 on:** April 01, 2011, 09:57:12 AM »

Will look again today when I get to shop,but think it was 105-106 on torque.

slatroni · « **Reply #10 on:** April 01, 2011, 12:23:49 PM »

HA! Go ride it, if it runs warm in traffic and then won't start before it cools down, its a 1397!

J.R. · « **Reply #11 on:** April 01, 2011, 12:35:07 PM »

Quote from: slatroni on April 01, 2011, 12:23:49 PM

HA! Go ride it, if it runs warm in traffic and then won't start before it cools down, its a 1397!

Yeah that too!!

firemanjim · « **Reply #12 on:** April 01, 2011, 02:43:35 PM »

Torque was about 110 and it runs at or below mid range in traffic,starts fine.

BATTMAN · « **Reply #13 on:** April 01, 2011, 02:49:43 PM »

Does it have 2 batteries?

firemanjim · « **Reply #14 on:** April 01, 2011, 03:02:50 PM »

Haven't looked.

sportbikeryder · « **Reply #15 on:** April 01, 2011, 03:32:25 PM »

If it is 110 tq and only 166HP, it is probably a 1397 that needs to be tuned and cams re-timed. \\Do you have a dyno sheet for it or a dynojet run file? If so, shoot me a PM adn I will post it or if you can, post it here.

John

Nosgsx1300 · « **Reply #16 on:** April 01, 2011, 04:45:58 PM »

Quote from: sportbikeryder on March 31, 2011, 05:49:22 PM

Well, I would be inclined to agree that it isn't a big bore motor. That said, the tune could be shitty or the cams could be installed incorrectly and a 1397 could make 166. without headwork and cams an 84mm bore motor pretty much sucks. Not as low as 166 typically, but still crappy.

A couple of 1397's I built with just intake cams on both sides still made over 180

firemanjim · « **Reply #17 on:** April 01, 2011, 08:59:47 PM »

Spent at couple afternoons on dyno-can assure you tune is NOT shitty. Cannot speak to cam timing. Bike seems to run well all around just not power I would expect.Will see if I can figure out how to send dyno chart.

rc51price · « **Reply #18 on:** April 01, 2011, 10:38:16 PM »

i just finished mine and the cylynder had 84mm on the side of it when i got...

dave3.4 · « **Reply #19 on:** April 02, 2011, 01:35:05 PM »

Most people would put a full exhaust on it before they tore into the motor to get more power. That and still having the pair valve on I would really doubt it has a 1397.

sportbikeryder · « **Reply #20 on:** April 02, 2011, 08:36:00 PM »

Quote from: firemanjim on April 01, 2011, 08:59:47 PM

Spent at couple afternoons on dyno-can assure you tune is NOT shitty. Cannot speak to cam timing. Bike seems to run well all around just not power I would expect.Will see if I can figure out how to send dyno chart.

Something is up if it is making 110 ft-lbs torque and only 166 hp

I would assume your torque peak is at around 7300-7500 with those numbers and then drops off pretty quickly making about only about 85- ft-lbs at 10,000.

Cams are likely not degreed in a good location, unless you want to use the bike to tow trailers

If the head isn't ported and the cams are still stock, you won't really benefit from really aggressive cam timing, but you could likely make 15 more HP, with only a 4-5 ft-lb torque loss.

rc51price · « **Reply #21 on:** April 03, 2011, 11:01:11 PM »

just went to dyno yesterday and got 196hp and 110trq..needs some more dyno time,a little fat in some areas..1397,395/380 cams degreed at 108-110,ported head..have a dyno print but too large for download..

firemanjim · « **Reply #22 on:** April 05, 2011, 12:08:44 PM »

Is a 1397 a drop in kit or does motor have to come apart?

J.R. · « **Reply #23 on:** April 05, 2011, 02:33:41 PM »

Quote from: firemanjim on April 05, 2011, 12:08:44 PM

Is a 1397 a drop in kit or does motor have to come apart?

Has to come apart.

firemanjim · « **Reply #24 on:** April 05, 2011, 02:36:00 PM »

Then seller was full of it or got taken himself. Good thing it was not reason I bought bike.

J.R. · « **Reply #25 on:** April 05, 2011, 02:47:47 PM »

Quote from: firemanjim on April 05, 2011, 02:36:00 PM

Then seller was full of it or got taken himself. Good thing it was not reason I bought bike.

How you know it's not been apart?

sportbikeryder · « **Reply #26 on:** April 05, 2011, 03:25:49 PM »

If it is really making 110 ft-lbs, it has been apart.

Oz Booster · « **Reply #27 on:** April 05, 2011, 04:32:31 PM »

Jim will they have the bore size tool at Mojave ??

firemanjim · « **Reply #28 on:** April 05, 2011, 09:55:03 PM »

Greg,was thinking I would love to have access to one to see.
The 110ft/lbs was same run as 166hp.

J.R. · « **Reply #29 on:** April 06, 2011, 05:54:26 AM »

Quote from: sportbikeryder on April 05, 2011, 03:25:49 PM

If it is really making 110 ft-lbs, it has been apart.

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Author Topic: How to tell a 1397 (Read 14436 times) Tweet