LotsofChevys Posted December 18, 2018 Report Posted December 18, 2018 Hey guys, I'm new to the forum but have been a long time reader. I was hoping for some help. I have a new DC Power 270xp alternator, on the very first cold start of the morning I get a low voltage light for about 30 seconds then it goes away for the rest of the day. Wiring looks good... Any ideas
Ron36 Posted December 19, 2018 Report Posted December 19, 2018 Belt might be slipping 2022 Ford Maverick on 22’s Skar SK1500.1 on 4 Skar VD-8’s Mids Sundown Super tweeters, Skar TX 6.5 components on Skar SKM400.4 LC2 for audio control , XS Power D680 XS Series Extra Battery
LotsofChevys Posted December 19, 2018 Author Report Posted December 19, 2018 I have a 93.5" belt that was for the old 145amp alternator that I had upgraded from the factory 105amp, which called for a 92.9" belt.. i could try the original one I guess as long as I stay within the normal range on the tensioner? I guess I could call DC also to see if they spec it out for the 105 amp size which I wouldnt expect but u never know. I appreciate the help tho, the belt slipping was my first thought.
Ron36 Posted December 19, 2018 Report Posted December 19, 2018 U should be using a shorter belt do to the ALT pulley is smaller to spin faster, Would try the other belt if u have it laying around. 2022 Ford Maverick on 22’s Skar SK1500.1 on 4 Skar VD-8’s Mids Sundown Super tweeters, Skar TX 6.5 components on Skar SKM400.4 LC2 for audio control , XS Power D680 XS Series Extra Battery
LotsofChevys Posted December 19, 2018 Author Report Posted December 19, 2018 I thought the pulleys on the 145 and new 270 were the same, but I will measure both and try the short belt, that I did keep, and see what happens.. I'll keep you posted.. thank you for your input Ron36
bmwking Posted December 19, 2018 Report Posted December 19, 2018 i use a 10mm shorter belt with my HO alt. no slippage. and when it's cold out, my voltage actually runs 0.1-0.2 higher. my favorite part of winter is seeing 14.7 on my voltmeter
Ron36 Posted December 19, 2018 Report Posted December 19, 2018 I get 14.8-15 when it’s cold 2022 Ford Maverick on 22’s Skar SK1500.1 on 4 Skar VD-8’s Mids Sundown Super tweeters, Skar TX 6.5 components on Skar SKM400.4 LC2 for audio control , XS Power D680 XS Series Extra Battery
LotsofChevys Posted December 19, 2018 Author Report Posted December 19, 2018 So I tried the new old belt which according to the tensioner lines was gonna be way too tight. There does seem to be a belt size between the two per the gates website which is 5mm longer than the short one I have and 13mm less than the one that is on there. Guess I can pick one up just to see what that does. The pulley on the DC is definitely smaller (1 3/10) vs the stock (1 6/10) per a caliper I had lying around. Thanks guys
LotsofChevys Posted December 19, 2018 Author Report Posted December 19, 2018 So just a note, upon starting this morning the tensioner indicator was at the left line barely, (started in the middle)and it took about 2-3 min for the alternator to kick in. Gonna buy the "Goldilocks" belt size and hope for the best
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