richardm6994 Posted February 7, 2013 Share Posted February 7, 2013 Hi folks, it's me again...the lone kit car guy who has wandered into your great forum! I'm installing a 3.9 v8 into my Robin Hood kit ca (lotus 7 type). As you can imagine, clearances are tight...especially under bonnet! I've got an edelbrock 500 carb and an offenhauser duel port inlet manifold....but the thing is...the inlet manifold mounts the carb at a forward angle!! I've done a bit of reading and discovered I can buy angle plates to correct this mounting angle, but the problem will be my bonnet clearance! With a 10mm thick heat insulator and a deep dish narrow air filter, I've only got about 10mm or so spare under he bonnet so I ain't got room for this wedge plate! Can I get away without using the wedge plate or will the funny carb angle bugger up the fueling? I would great appreciate your advice. Quote Link to comment Share on other sites More sharing options...
mikec Posted February 7, 2013 Share Posted February 7, 2013 Can't really help too much on the angle but if you need any jets etc I've got some leftovers from my carb. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 8, 2013 Share Posted February 8, 2013 Doesn't matter, it will be just as unreliable at any angle.Yes, I used to run one. Even old Lucas Flapper EFI is better. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 8, 2013 Share Posted February 8, 2013 Have you looked at EFI? It's possible that either a standard, or a shorter plenum would fit your needs OK, and release a fair few more horses. I think I read you are going Megajolt in your thread, Megasquirt is only a step away from that..... DIY tunable EFI Quote Link to comment Share on other sites More sharing options...
richardm6994 Posted February 8, 2013 Author Share Posted February 8, 2013 I appreciate what you are saying about the efi...but having looked into it I came up against bonnet clearence issues. I thought that the edelbrock 500 were good carbs! I've read lots of good things about them and most v8 kit cars that I know of use them! Quote Link to comment Share on other sites More sharing options...
elbekko Posted February 8, 2013 Share Posted February 8, 2013 I don't think the EFI setup is much, if at all, taller than a carb setup? You can probably pick up an EFI manifold for pretty cheap, I'd look into that before messing with carb clocking and such. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 8, 2013 Share Posted February 8, 2013 I thought that the edelbrock 500 were good carbs! I've read lots of good things about them and most v8 kit cars that I know of use them! They're not bad, but they do exactly what you'd expect when you strap delicate clockwork to the top of a big vibrating thing and then subject it to G forces. Sorry to say kit car builders are not usually to be held up as examples of engineering prowess, that said nor are most LR owners. People buy what everyone else buys, or what's in fashion, or what looks cool, or what they think will work. Kit car owners tend to gravitate towards shiny & loud. Quote Link to comment Share on other sites More sharing options...
richardm6994 Posted February 8, 2013 Author Share Posted February 8, 2013 Fridgefreezer...my main hobby is model engineering where everything is scratch built so I wouldnt say I'm your average kitcar builder! I've built a couple of 5" gauge locos and in the process of this 1/3 scale traction engine! I promise that an efi system will not fit under my bonnet Quote Link to comment Share on other sites More sharing options...
richardm6994 Posted February 8, 2013 Author Share Posted February 8, 2013 my main query is the manifold / carb base plate angle.... Quote Link to comment Share on other sites More sharing options...
mikec Posted February 8, 2013 Share Posted February 8, 2013 That's the reason I went injection because of bonnet clearance using the edelbrock. But anyway regarding the angle I'd just try it and see before using a plate, I've also got a pair of sprung off road float valves for sale too, their supposed to help off road. Quote Link to comment Share on other sites More sharing options...
richardm6994 Posted February 8, 2013 Author Share Posted February 8, 2013 With the offenhauser jwr low profile duel port inlet manifold and the deep dish filter from what I could work out it's a lower setup than injection stuff. I wouldn't have sold the injection stuff and bought the edelbrock stuff if I could have got the injection to fit. Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted February 8, 2013 Share Posted February 8, 2013 my main query is the manifold / carb base plate angle.... I'll answer your question then, the reason the inlet manifold mounts the carb at an angle forwards is that in a rangerover the engine is not mounted flat, from memory it is 8 degrees down at the back. so the carb mounting flange is angled to account for this as the carb works best totally flat. You'd be best skimming your manifold down, then mucking about with the studs. either that or swaping to a single plane manifold they are usually lower profile. Quote Link to comment Share on other sites More sharing options...
richardm6994 Posted February 8, 2013 Author Share Posted February 8, 2013 Brill! I thought it might be something like that but not knowing my rovers I thought it would be better to ask! Thank you Quote Link to comment Share on other sites More sharing options...
4X4byV8 Posted February 9, 2013 Share Posted February 9, 2013 I run a webber 400cfm carb on edelbrock manifold on my off roader. It sits level normally but obviously off roading aint level! I used to get problems with the carb overfuelling as the floats would stick open on incline or decent. Found I could get an 'offroad kit' for it, which basically replaced the float needles with sprung loaded ones that had a viton rubber tip to the seats. since fitting them I can honestly say ive never had problems since. I offroad regularly and compete and I would not swap the setup I have! I am even in the 20's with mpg on the road which for a series landrover aint bad! see if theres any kits available for your carb, or you may do a couple of plug chop tests. do a few with it on the angle then try it with the wedge plate in and no bonnet. see if theres much of a difference betweeen the 2. Quote Link to comment Share on other sites More sharing options...
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