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SVTPerformance's Chain of Restaurants
A Taste of Home
Mid-Atlantic Cobra Association
Excessive Motorsport's Latest Project...
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<blockquote data-quote="firstsvt" data-source="post: 7454208" data-attributes="member: 13740"><p>+1, but I have some questions/concerns. </p><p></p><p>I like the idea of the build but I have to express some of my questions/concerns...........not knocking you, just some constructive ideas/thoughts</p><p></p><p>1) How/why did you pick the F2M if you only want to run 21 PSI and pump gas? That thing can push upwards of 2250 CFM at full boogie, and I know you said on the dyno it only made 10 PSI at 6k. Thats because its a big blower and it will be way out of its efficiency range if you only rev it to 6k RPM. This is a big blower that needs to be spun...hard. Just seems like it may be too much blower for a steet car, IMHO. The few that have had success (mainly Dave King)with this blower in the past usually revved their motors to 8500+ RPM <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /> and had converter stall speeds of ~6800 RPM <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /> to get this blower to work. In summary, the blower is huge, and you need a lot of RPM to get it to work on such a relatively small displacement motor.</p><p></p><p>2) I ran into the same problem with the radiator and chose to go another route. Dont you think that having the blower inlet soo close to the radiator will cause it to ingest a lot of hotter air from the radiator, and may even be a restriction? These blowers are very sensitive to inlet side restrictions, and I think that may be a problem for you, I think IAT's may get excessively high.</p><p></p><p>3) I think your fuel system needs some considerable upgrades. I think that staying returnless will be a risky proposition with that blower. You will have plenty of CFM on tap with the blip of the throttle. I would seriously consider changing to a return style setup before letting that blower eat. And I would bet a good chunk of change that those 65 lbers. will be maxxed out before that blower even begins to wake up.</p><p></p><p>4) What size is all that tubing? It looks kind of small, to be honest. And where is the MAF located?</p><p></p><p>I hope you dont take any of this the wrong way, just wanted to ask some questions and maybe discuss some things to get this combo to work as best it can.</p></blockquote><p></p>
[QUOTE="firstsvt, post: 7454208, member: 13740"] +1, but I have some questions/concerns. I like the idea of the build but I have to express some of my questions/concerns...........not knocking you, just some constructive ideas/thoughts 1) How/why did you pick the F2M if you only want to run 21 PSI and pump gas? That thing can push upwards of 2250 CFM at full boogie, and I know you said on the dyno it only made 10 PSI at 6k. Thats because its a big blower and it will be way out of its efficiency range if you only rev it to 6k RPM. This is a big blower that needs to be spun...hard. Just seems like it may be too much blower for a steet car, IMHO. The few that have had success (mainly Dave King)with this blower in the past usually revved their motors to 8500+ RPM :eek: and had converter stall speeds of ~6800 RPM :eek: to get this blower to work. In summary, the blower is huge, and you need a lot of RPM to get it to work on such a relatively small displacement motor. 2) I ran into the same problem with the radiator and chose to go another route. Dont you think that having the blower inlet soo close to the radiator will cause it to ingest a lot of hotter air from the radiator, and may even be a restriction? These blowers are very sensitive to inlet side restrictions, and I think that may be a problem for you, I think IAT's may get excessively high. 3) I think your fuel system needs some considerable upgrades. I think that staying returnless will be a risky proposition with that blower. You will have plenty of CFM on tap with the blip of the throttle. I would seriously consider changing to a return style setup before letting that blower eat. And I would bet a good chunk of change that those 65 lbers. will be maxxed out before that blower even begins to wake up. 4) What size is all that tubing? It looks kind of small, to be honest. And where is the MAF located? I hope you dont take any of this the wrong way, just wanted to ask some questions and maybe discuss some things to get this combo to work as best it can. [/QUOTE]
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