dbtk2 Posted March 11, 2005 Report Share Posted March 11, 2005 I am in the process of putting 1.6 rockers in my Lumina and I don't think I'll be able to get to the back before I need to drive the car. I don't think it will make a big difference, but would it be bad to drive with 1.6's on the front (2,4,6) and 1.5's on the rear (1,3,5)? It might throw off the 02 sensor a little or something, but other than that, for a short time, is there anything it can screw up? Thanks, Shawn Quote Link to comment Share on other sites More sharing options...
Bossman429 Posted March 12, 2005 Report Share Posted March 12, 2005 I don't forsee any problem with that. I wouldn't go out romping on it, or racing with that set up, but all it is doing it opening the valves more than the other side. On the topic, however, I was going to PM you about your rockers, because I'm thinking about getting a set. I have seen two varietys: Comp Cams 1.6 rockers - decent price Mantapart 1.6 Rockers - more expensive, like most mantapart stuff Have you had any problems installing the rockers? Do you have to grind on anything the head to accomidate the extra arm travel? I thought I read somewhere about problems installing 1.6 rockers on a 60* V6. So I considered getting a set of Comp Cams 1.52 rockers to prevent any of those possible problems. I'd still get the benefit of the rollers, and just a little bit more lift. Quote Link to comment Share on other sites More sharing options...
Brian P Posted March 12, 2005 Report Share Posted March 12, 2005 I see no major issues with it. It's like having a few worn lobes on the camshaft...lol I did the 1.6 rockers on my sis's car. For the rears I had to pull the alt, upper plenum, and tilted the shit out of the engine. Worked rather well. Quote Link to comment Share on other sites More sharing options...
Bossman429 Posted March 12, 2005 Report Share Posted March 12, 2005 I did the 1.6 rockers on my sis's car. For the rears I had to pull the alt, upper plenum, and tilted the shit out of the engine. Worked rather well. So am I safe to assume that was a 3.1, and not a 3100 (since they have factory 1.6's, just not rockers)? You didnt' have any problems with them, or have to grind anything. I'm thinking about some 1.6's, but if they aren't a simple bolt on, I'm just gonna go with 1.52's Quote Link to comment Share on other sites More sharing options...
Brian P Posted March 13, 2005 Report Share Posted March 13, 2005 the only grinding you'll need to do is if you have 3400/3100 Vin J Manifolds. Even then it's not always needed. The intake runners of the older 3100 and the Gen 2's are smaller enough that they clear without a problem. Quote Link to comment Share on other sites More sharing options...
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