Datsun Roadster Forum-311s.org

just got a hood off ebay...but its flat, lift off style.
what should i put on it? Nothing? cowl? i have a scoop simular to the datsun but wider and it is lowered down the middle of it....

maybe a evo style..no never mind to importish.

throw you ideas out anything!!!
im thinking about paint all the chrome black (its a silver car) i know its been down but i love it!!!!

its not in the best shape so thats why...with black spoke wheels with a polished lip (panasports) like?

steve

I remeber seeing some racer owner in Japan put downdraft carbs on his manifold with 4 trumpets sticking out of the hood.

The hood scoop was added to the roadsters to improve airflow through the radiator. That is why it is partially blocked off. I'd say try it and see how it works.

Will

If you don't have the hood scoop make sure you have the scoop that fits under the frame to direct air up into the radiator.

Happy Wrenching
Mark

does it really need the scoop under it? it doesn't have a grill as of now.
and also im going to be making a new one. (a polished horzontal)
so air will be able to get through fine.

thanks
steve

My guess would be yes to be on the safe side for airflow if you have one. When I got my Beast it did not have the lower scoop on it and it ran on the warm side. The PO had broken off the screws in the frame trying to remove it, and never put it back on. I put it on with 2 ring clamps (hey it worked). After putting it on it dropped down a few needle widths on the gauge, or so it seemed. Since your new hood does not have the scoop to direct air to the top of the radiator, the grill area looks like it only exposes about 1/2 to 2/3 the area of the radiator. It looks like the scoop underneath would force fresh air up from the bottom. I guess the other thing is does your car run on the cool side or on the hot side to start with?

Happy Wrenching in the New Year
Mark

well i don't know yet. i drove it for two miles before blowing a head gasket..but it will probably be on the warm side considering the high compression. just had it cut .025 and it was cut before that.
i may just have to stroke it...*sigh...lol

steve

Well, that's 2 more miles than I got to drive mine this year
Let's all hope for a better roadster 2005.....

Mark

that sucks. i should have mine running by next year (this weekend)
heres to a better year!!

steve

You might pick up a CDM BRE style airdam. The reason Pete Brock built it was to cool the 2 liters better. It causes a low pressure area under the engine and that will allow it to cool better. Do some homework on it. My car runs cool during the day, and almost cold during the night (like it never really warms up.)

Will

got the hood in. the brace hits the brake master cylinder (it was for a 66) mines a 68.
i can leave it so its lifted in the back to let hot air out. its not even that noticable.
The hood is really stiff. im pretty sure i can bolt up the stock hood hinges to it. i just have to fab up som mounts and epoxy them on. or i can use the pin type that the hood already has.

it looks pretty good with out the scoop. But i was thinking i can just cut off the stock scoop and put it on this hood.

i don't know yet its almost 5 am. and i just finished taking the head off agian.

can anyone take the intake and exhaust off without taking the carbs off the intake. no easy feat! i have small hands so it doesn't hurt

steve

Steve:
Can't you take a plaster splash of the old hood scoop and fab a new fiberglass one from the splash.
Hate to see a good hood cut up.

Ray B.

its not a god hood thats why i got this one. its smashed in the corner. but i was thinking about fixing it. is that how you make molds? is plaster?
ive never done fiberglass before but i really want to.

i gugess ill have to read up on it

thanks
steve

Plaster of paris is good enough.
Build a study wooden box on top of a pallet (that won't flex) which is about 1" deeper than the height of the scoop area and 3" wider. Wax (paste floor wax will do)the scoop and close off the scoop intake with duct tape or whatever. Fill box with wet plaster. Place hood into plaster and shake hood until scoop is fully submerged in the plaster filled box.
Pop the hood out of the dried plaster after a few days.
Locally fill any voids in the plaster mold as required.
Wax (paste floor wax will do) the mold and layup fiberglass resin and cloth as required.

You can also use foundation hydraulic repair cement (Home Depot) to make the mold , but you have to make sure the scoop opening is really sealed. Could also provide a draft angled (wood) block from the opening sloped to the hood to prevent the cement from locking into the opening.

Remember to test you plaster or cement working time before you do a large mix.

Ray B.

thanks. ive wanted to try doing fenders and such. same method?

thanks agian
steve