Jump to content
SAU Community

Surge Tank In Engine Bay ?

smok74

By smok74,
in Fabrication

 Share

Recommended Posts

smok74 Community Regular

smok74

Posted
Posted

We have all seen an external surge tank / pump setup installed in the boot of a car....we've also all heard of it being canaried..... My question is, why can't we install the surge tank in the engine bay if we can find the room ? like behind the drivers side headlight, Ive seen people mount their breather tank there, so why not a surge tank ?

Heat could be a concern, but that can be controlled with insulation.

I wanna heard your feedbacks on this idea.... Like the technical pros n cons.

Cheers guys.

Link to comment
https://www.sau.com.au/forums/topic/267574-surge-tank-in-engine-bay/
Share on other sites
Messiah Mentor

Messiah

Posted
Posted (edited)

i tihnk you'd want to store this as far inboard as possible. the idea of having a metal can full of petrol mounted to the inside of a front guard makes me a little uneasy...

Think about worst case scenario, you rear end, t-bone, head on whatever and the tank ruptures then you now have fuel splashed around a hot engine bay.... problems...

i think the reason most are boot mounted is because it can be mounted away from the edge of the car, it has no direct exposure to the engine and its not inside the cabin.

I've seen race cars with the fuel cell and surge tank inside the cabin, but never one inside the engine bay, i fugure thats for a good reason.

Edited by Messiah
Beer Baron Grand Master

Beer Baron

Posted
Posted

the main problem with engine bay mounting is the heat. you want to keep the fuel as cool as possible, and having a surge tank in the engine bay wont help with that. also, you have a big length of line then for your lift pump to send the fuel through the reach the surge tank. it's not impossible, but it's one of those things that if there was a big benefit to doing it, everyone would be. the other thing is a decent tank, fittings, mounting, pump and wiring all adds up to a fair bit of weight, and having that in the nose of the car which is traditionally already overweight is not a winner for weight distribution.

smok74 Community Regular

smok74

Posted
  • Author
Posted

Well, how about having the surge tank in the boot, then the Bosch 044 in the engine bay ? That way, the pump wouldnt have to work extra hard to pressurise the entire length from the boot to the engine bay but rather just a short distance from the pump to the rail both of which are located close together. There wouldnt be any air in the line as the surge tank would make sure of that and everything would still work the same.

femno Grand Master

femno

Posted
Posted

omg heat!

its hot under the bonnet of a car! the pump will get hot! then heat the fuel! the petrol coming from the tube under the car is nice and cool and that is how it enters the rail.

no the pump doesnt work 'extra hard' to pump it all the way from the boot, its the same thing. do some physics.

the pump will have to suck the fuel all the way from the surge tank in the boot, you will get airation in the fuel then BANG.

just give up.

daisu Mentor

daisu

Posted
Posted

I was looking into this aswell because it would mean I wouldn't have to worry about damaging it when I have stuff in the boot, or having to seal it off etc but it just isn't practicle to have it in the engine bay.

The only other reasonable alternative would be mounting it underneath the floor of the boot (outside the car) next to the fuel tank.

Kinks Grand Master

Kinks

Posted
Posted
Well, how about having the surge tank in the boot, then the Bosch 044 in the engine bay ? That way, the pump wouldnt have to work extra hard to pressurise the entire length from the boot to the engine bay but rather just a short distance from the pump to the rail both of which are located close together. There wouldnt be any air in the line as the surge tank would make sure of that and everything would still work the same.

Try it, die in a fire and then come tell us how you went.

Seriously though, all a fuel pump cares about is pressure and flow, the length of the line doesn't matter because ultimately it's pushing against the fuel pressure reg. If your lines are undersized you will have a problem but you need to have HUGE horsepower before this becomes a problem.

Storing any amount of fuel in the end of the car you usually hit hardest if you're going to have an accident... not smart!

Duncan Grand Master

Duncan

Posted
Posted
The only other reasonable alternative would be mounting it underneath the floor of the boot (outside the car) next to the fuel tank.

now we are talking.

have a look at the undercar setup with swirl pot and twin 044s that risking put together for n1gtr. there are pics on here somewhere

DaGr81 Mentor

DaGr81

Posted
Posted

How would it survive for arguments sake say a speed hump, I've always wanted to mount underneath to avoid canaries etc, but thought in a street car situation it may get damaged easily. Speed humps, driveways, rocks and other unexpected hazards, also there's 3 speed humps in a strathfield car park that are huge I always scrape no matter what, how would one survive against a long slow scrape LOL if that makes sense

Duncan Grand Master

Duncan

Posted
Posted

well they are above the rear cradle so if you get around to hitting that setup on the ground you have other issues lol. It goes in the space under the rear seat where the aus delivered GTR had the diff cooler.

  • 2 weeks later...
randomagg Apprentice

randomagg

Posted
Posted
We have all seen an external surge tank / pump setup installed in the boot of a car....we've also all heard of it being canaried..... My question is, why can't we install the surge tank in the engine bay if we can find the room ? like behind the drivers side headlight, Ive seen people mount their breather tank there, so why not a surge tank ?

Heat could be a concern, but that can be controlled with insulation.

I wanna heard your feedbacks on this idea.... Like the technical pros n cons.

Cheers guys.

I think its a good idea. you should do it. then i will laugh at you as ur car explodes. OMFG read the topic title out loud to yourself and then see if you want to it. I you still do then sell your car cause your stupid. imo.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • PranK
      Chris' Toyota Mark ii JZX110

      By PranK · Posted

      This looks great! Awesome to have the 5 speed with an LSD in this. The Recaro's look like SR2's or SR3's. It's a shame they've been retrimmed as they would have looked sweet in their original colours. I think I'd want my agent to be a little more up front and informative too. I've never imported but I reckon it would make me a little nervous, so the more info the better.
    • soviet_merlin
      Duncan's V37.......race car?

      By soviet_merlin · Posted

      Thanks for doing that Duncan! Makes you a good person in my books. We don't get kangaroos or wombats here. But we have bats and it's similar. AFAIK it's often the mums with a baby attached that get hit because they drop lower when starting from a tree. If you hit an animal, check on it. https://www.ifaw.org/au/resources/wildlife-rescue-app An app to get the closest wildlife rescue contact.
    • Murray_Calavera
      Jacks that fit under GTR lips that can reach the subframe?

      By Murray_Calavera · Posted

      My dream is also to have a proper hoist, but I don't think it will ever happen. My quickjack is probably as close as I'll ever get, it really is very good though. 
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      Yeah we keep on in the dailies, it is pretty poor how many animals get hit and the driver leaves without checking....have saved a couple of little ones over the years. Bit of a gruesome job though, pouches generally need to be cut open because they are so tight and often the joey doesn't realise mum is gone so they are still locked onto the teat. I checked the modules in front of the DS wheel where an oil cooler should go.... There is the radar unit - that can go for race use) One of the 2 HX water pumps, the silver cylinder. That needs to be kept but might be able to be relocated But the bad news, the big computer mounted vertically in front of the wheel (blocking any potential air exit) is the electric steering computer. That is required until/unless i do a hydraulic steering conversion, and in CAD based modern car design it is not like I can just pop a big unit like that somewhere else (plus the loom would be too short anywhere else too). So, the passenger side is OK to clear out (just use a smaller washer reservoir, potentially elsewhere), but the DS no beuno
    • Duncan
      Chris' Toyota Mark ii JZX110

      By Duncan · Posted

      Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
×
×
  • Create New...