1971 F26 paragon vdrive intermittent issues
Posted: Tue Aug 21, 2018 4:46 pm
Hello
I have a 1971 trojan f26 that has been repowered with a 360 and paragon pv32r trans with v drive. It runs great and the family loves it. We tool around the long island sound and are comfortable on it for long weekends with 2 kids and the dog. The engine runs real smooth but I have had 3 events with the transmission. The first time we were running at 3200 rpm as that's where my 4 barrel is just opening and delivers the best gas / performance at about 14 knots. It was like a small explosion. I can compare it to the time I blew up a transmission on my F150. But I throttled down and it was a smooth running to the dock. I thought maybe I hit something or maybe it was a backfire. I took it easy on the motor for a few trips keeping it under 2500. After a few trips at 3200 the same thump happened and I backed down with no noticable sound or issue at 2000 rpm. When it happened there was no interruption in rpm on the motor but a big break in power to prop for 1 -2 seconds. I have been running it at 2500 or less since. We just had a instance at 2800 rpm where we had some whirling noise and seemed to be in low gear so I am sure we were slipping. Once again I powered down and it was perfect.
I have checked both fluid levels in trans and vdrive and both are topped and not burned. I dont have temp gauges on the trans and vdrive so I used my thermal camera to determine the trans never gets over 110 degrees and the v drive never exceeds 120 degreed at 3000 Rpm for a while. I am sure is not a fluid or temp issue.
Can anybody give any advice? We have completely refit the interior of this boat and would love to keep her.
Can I pull the trans and v drive without pulling the engine?
Thanks in advace!
Jim Moran
I have a 1971 trojan f26 that has been repowered with a 360 and paragon pv32r trans with v drive. It runs great and the family loves it. We tool around the long island sound and are comfortable on it for long weekends with 2 kids and the dog. The engine runs real smooth but I have had 3 events with the transmission. The first time we were running at 3200 rpm as that's where my 4 barrel is just opening and delivers the best gas / performance at about 14 knots. It was like a small explosion. I can compare it to the time I blew up a transmission on my F150. But I throttled down and it was a smooth running to the dock. I thought maybe I hit something or maybe it was a backfire. I took it easy on the motor for a few trips keeping it under 2500. After a few trips at 3200 the same thump happened and I backed down with no noticable sound or issue at 2000 rpm. When it happened there was no interruption in rpm on the motor but a big break in power to prop for 1 -2 seconds. I have been running it at 2500 or less since. We just had a instance at 2800 rpm where we had some whirling noise and seemed to be in low gear so I am sure we were slipping. Once again I powered down and it was perfect.
I have checked both fluid levels in trans and vdrive and both are topped and not burned. I dont have temp gauges on the trans and vdrive so I used my thermal camera to determine the trans never gets over 110 degrees and the v drive never exceeds 120 degreed at 3000 Rpm for a while. I am sure is not a fluid or temp issue.
Can anybody give any advice? We have completely refit the interior of this boat and would love to keep her.
Can I pull the trans and v drive without pulling the engine?
Thanks in advace!
Jim Moran