Photography by Andy Hollis
An engine needs gasoline to run, but that gasoline needs to live somewhere clean before it can be compressed, exploded and turned into raw speed.
That’s why we ditched the old fuel tank currently fitted to the One Lap CRX in favor of a fresh aftermarket unit from Spectra Premium.
See more progress on the One Lap Honda CRX in the official build thread: The One Lap CRX is back.
I race an EG Civic in endurance races and recently replaced the fuel tank with what looks like the same model as the one pictured here. Now, despite a slight increase in overall capacity, the Civic starves for fuel after 1 1/4 hrs whereas before it was good to about 1 1/2 hours. I checked inside both tanks and the stock one has baffling around the fuel pickup that the new one doesn't.
Is there a replacement tank that exactly duplicates the stock tank with baffling?
mender said:I race an EG Civic in endurance races and recently replaced the fuel tank with what looks like the same model as the one pictured here. Now, despite a slight increase in overall capacity, the Civic starves for fuel after 1 1/4 hrs whereas before it was good to about 1 1/2 hours. I checked inside both tanks and the stock one has baffling around the fuel pickup that the new one doesn't.
Is there a replacement tank that exactly duplicates the stock tank with baffling?
Same issue here. For me, it's the lack of a fore-aft baffle, so it now starves earlier under heavy braking. 
I'll probably just bite the bullet at some point and do a surge tank.
A Hydramat fuel pick-up may be cheaper than a surge tank...possibly.
GameboyRMH said:A Hydramat fuel pick-up may be cheaper than a surge tank...possibly.
The EF tanks have a big fuel bowl welded in them which makes it hard to implement a proper hydramat setup w/o cutting it out of the tank And part of the issue with these aftermarket tanks is they changed the fuel bowl to a sharp-edged rectangle.
I do have all the parts for a DIY setup that lays the pumps on it's side in the OE bowl and uses a small hydramat. The plan was to restore the OE tank and install that. Supposedly allows all but a gallon or so w/o starving.
The classes I've been running with this car have min weights that require me to ballast up anyway, so I've lacked motivation to do the work.
Just weld a cake pan to the underside of the tank, if you have the clearance. I made a video where I mock up a couple ways to baffle a tank.
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