fastorange Posted April 21, 2006 Posted April 21, 2006 Hi All I purchased a broadmoor off ebay and there was no muffler I ordered a replacement and the threads arent the same the exhaust port measures about 7/8" the muffler measures 3/4" do I need a nipple and elbow or did I get the wrong muffler? I cant find the manufactures tag on this tractor where is it normaly found? rounded hood I also bought a Big Ten I used it a few times and it needs new bearings in the deck. while taking the spindles off I noticed the rollers under the deck move around a lot in big oval holes in the brackets is this normal or do I need new brackets or bushings for the brackets.
gregc Posted April 21, 2006 Posted April 21, 2006 Your muffler should be 3/4" MPT. The mower deck brackets shouldn't have oval holes. Could weld the holes shut and re-drill.
Mick14 Posted April 21, 2006 Posted April 21, 2006 What year broadmoor ? and what engine does it have on it ? I have a 64 with the 6hp. and it takes a 3/4in muffler.if you have a 7 or 8 hp. it may need a 1in. muffler,using black iron gas fittings will work to extend or reroute if you need to.
gregc Posted April 21, 2006 Posted April 21, 2006 Mufflers for the 7 and 8 hp engines are 3/4" MPT also.
fastorange Posted April 21, 2006 Author Posted April 21, 2006 quote:Originally posted by gregc Your muffler should be 3/4" MPT. The mower deck brackets shouldn't have oval holes. Could weld the holes shut and re-drill. so the brackets dont have bushings?
gregc Posted April 21, 2006 Posted April 21, 2006 No bushings in the brackets. Four bushings for the rollers.
fastorange Posted April 22, 2006 Author Posted April 22, 2006 quote:Originally posted by gregc Mufflers for the 7 and 8 hp engines are 3/4" MPT also. What does MPT stand for?
gregc Posted April 22, 2006 Posted April 22, 2006 quote:Originally posted by fastorange quote:Originally posted by gregc Mufflers for the 7 and 8 hp engines are 3/4" MPT also. What does MPT stand for? Male Pipe Thread.
UCD Posted April 22, 2006 Posted April 22, 2006 The correct term would have been ¾" x 14 NPT (national pipe taper) thread. ¾" pipe with 14 threads per inch tapered. There is also NPS (national pipe straight)thread. ¾" pipe is ¾ ID (inside diameter and 1" OD (outside diameter and measures about 7/8" at the start of the thread taper. ½" pipe is ½" ID and ¾" OD and measures about 5/8" at the start of the thread taper. 1" pipe is 1" ID and 1¼" OD and measures about 1 1/8" at the start of the thread taper.
gregc Posted April 22, 2006 Posted April 22, 2006 quote:The correct term would have been ¾" x 11½ NPT (national pipe taper) thread. ¾" pipe with 11½ threads per inch tapered. 3/4" NPT = 14 threads per inch.
UCD Posted April 22, 2006 Posted April 22, 2006 My mistake 1" pipe is 11½ threads per inch. 1/16" NPT/NPS 27 1/4" NPT/NPS 18 3/8" NPT/NPS 18 1/2" NPT/NPS 14 3/4" NPT/NPS 14 1" NPT/NPS 11½ 1¼" NPT/NPS 11½ 1½" NPT/NPS 11½ 2" NPT/NPS 11½
fastorange Posted April 22, 2006 Author Posted April 22, 2006 quote:Originally posted by UCD The correct term would have been ¾" x 11½ NPT (national pipe taper) thread. ¾" pipe with 11½ threads per inch tapered. There is also NPS (national pipe straight)thread. ¾" pipe is ¾ ID (inside diameter and 1" OD (outside diameter and measures about 7/8" at the start of the thread taper. ½" pipe is ½" ID and ¾" OD and measures about 5/8" at the start of the thread taper. 1" pipe is 1" ID and 1¼" OD and measures about 1 1/8" at the start of the thread taper. Thats the answer I was looking for I went and got the correct pipe this morning after googling mpt and npt I already had heared the term npt before but didnt know what the sizes really stood for. Does the 6 horsepower broadmoor have a 1/2" pipe thread muffler? just curious because I looked up my engine at briggs&stratton and it said I needed the muffler with 1/2" threads. I got it running It doesn't have the correct muffler I adapted up to a 1" muffler rather than go with the 1/2" one. Could this be hurting my power output. It doesn't smoke I had to stop a couple times to avoid stalling out. A bearing in the deck could be going. It has also been sitting for awhile. I cant find the numbers for this only the deck #990289 model 1244 the engine is model 142702 type 9124 01 serial# 74706 If you can help me figure out the year I would appreciate it as I want to get a repair manual
2burning Posted April 22, 2006 Posted April 22, 2006 In general in my opinion going to a larger free flowing muffler is not going to hurt your power. Maybe just a bit a low end torque, but you should end up with more high end horse power. To look up manuals, you go to the simpletractors home page and click on Parts and Manuals, then click on the Simplicity parts and owners manuals the 1st link. If you key in the 990289 it comes up with various PDF files to look at. Also, since you have the deck number, you can search on the simpletractors site and figure out tractor numbers that the deck was likely to have come on, like tractor # 990288. http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_400_870_00_BM_S.pdf http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_400_1615_00_BM_S.pdf http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_100_1615_00_BM_S.pdf http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_100_3621_00_BM_S.pdf http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_400_3621_00_BM_S.pdf The search page you get directed to above (http://www.simplicitytechpubs.com/techpubsearch.php) says that the Repair Manual is not available, but they are lying to you. You go to http://www.simplicitytechpubs.com/ and then Print Vender Document Search and search on TP_500, then search on 990288 then you will see the Repair Manual at: http://www.simplicitytechpubs.com/6767PRINT/PDF_files/TP_500_569_00_BM_S.pdf :>
fastorange Posted April 23, 2006 Author Posted April 23, 2006 Thanks for the info on getting a manual I am going to try that. I had already looked up the tractors that the deck came on the broadmoor from 63-66 thats why I included my engine data. Is there a engine look up site?
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