05-28-2010, 12:11 AM
Join Date: Jul 2007
Location: Cypress, TX
Total Cats: 35
NA 1.6 weight reduction: Upgrade to 1.8 water pump and alt tensioner: Save 1.5 lbs
NOTE: The 1.6 block doesn't have a threaded hole for the timing belt tensioner, you'd have to fill and tap the unthreaded hole on the 1.8 pump.
1.6 guys, next time you change out your water pump, think about this. The 1.8 water pump has an extra tab on it for a differently designed alternator tensioner. I think the newer design is far superior.
Here's the breakdown on alternator tensioner brackets, based on me going out and looking at mine.
The tensioner bolt assemblies are the same.
Both brackets are made of pressed steel.
Draw your own conclusion here. I couldn't measure how much the tab on the 1.8 water pump weighs, but that probably isn't even 2 ounces.
And while you're at it, drill a hole in the tensioner block bolt and add a paperclip. That way you won't ever lose that assembly on the road again. You also gain more space to reach your hands into that area to work on things compared to the 1.6 bracket. Total weight savings: ~1.5 lbs.
Last edited by Bryce; 05-29-2010 at 04:01 PM.
Reason: Added note at top