You know you have a problem when you go to pass a ford and your fender collapses from the suction. [emoji1787]The big question is how restrictive is the fender itself?
Talking about GMT400s using Tapatalk
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You know you have a problem when you go to pass a ford and your fender collapses from the suction. [emoji1787]The big question is how restrictive is the fender itself?
Odd, I thought 94s all had the "dryer vent" tube and no flapper.Hello friends,
I have always wanted to know, is the heat riser really necessary on these TBI motors? For example, you see lots of folks flip the lids on their air cleaner housings, which would completely negate the heat riser. I even drove my '95 TBI 305 GMC for a year with the lid flipped and it ran fine year round, which tells me the heat riser is perhaps nice...it helps a little on cold starts...but that's it?
Do folks ever delete them just to clean up the engine bay?
I'm getting ready to do some tune-up and clean up on my 1994 Z71 and I'd love to know prior to getting my hands dirty.
Thanks.
Yeah. I was thinking something that insulates better than aluminum would probably be a good idea too.How does doubling the surface area exposed to engine bay heat, doubling the hot contact area of the incoming air and slowing to half the incoming air speed (through the ducts) provide 'cooler' air?
If the aim was to maximise transmission of engine bay heat to incoming air, that's how you'd go about it.
That's interesting! Do you still have that letter? I'm sure we'd love to see a copy of it.I had to write a letter to GM about flipping the lid over when I was in high school and shop teacher seen it.
They answered with a yes on performance increase and even mpg but it would not pass a emission test and could have issues in real cold weather was their answer. Ive never had a issue on mine but I've only been in real cold once in my 90 but still had no issue. As far as air flow you can put a 8" stove pipe out your hood and it shouldn't affect it negatively at all. Now the spacer under air cleaner is a necessary evil. If it is removed to use a normal type carb air cleaner the fuel spray from injector is disrupted and doesn't run to good and always have fuel smell.