Nath 1,975 Posted January 8, 2015 I'm all for giving it a crack. Have to figure out a way to block it temporarily though. Will it mess with the engine running temp either way? What's the theory behind it? Just that the intake stays colder or something? Edit: That would make sense when I think about it, if the coolant flows out of the block hot and into the manifold... Just going from memory... The hose from the block to the front of the manifold can just come off and get blocked up... The hose connecting to the T piece from the rear of the manifold I can just bypass by swapping the T piece with a regular connector. Share this post Link to post Share on other sites
Nath 1,975 Posted January 8, 2015 This thread is gold. Share this post Link to post Share on other sites
XFChris 126 Posted January 12, 2015 Anyone have photos of the cold air ducting? I'll convert my project to thermo fans. Share this post Link to post Share on other sites
wagoon 2,429 Posted January 12, 2015 Do you want proper setups or is dodgey looking ok. I made a CAI for my xe by using the intake tube from an xf that goes around the battery. Placed the mouth down by the radiator protected by the bumper from stuff flying in. Then joined to the carby aircleaner snout. Looks very dodgey but was solid, cant say I felt any different like I did when I removed the rubber seal on the aircleaner lid. Share this post Link to post Share on other sites
SLO247 1,713 Posted January 12, 2015 Got two sets of extractors here. One set is 6-3-1 other is 6-2-1. Tri Y maybe pacemaker but unsure, other set Motovator. Which set should I use? Share this post Link to post Share on other sites
Outback Jack 6,352 Posted January 12, 2015 I like the pacemakers mate- been around for donkeys years, but I don't think I've ever seen a set of motovators. Jack. Share this post Link to post Share on other sites
tpak addict 1,909 Posted January 13, 2015 6-3-1 are supposed to be good for low down torque 6-2-1 good for higher in the rev range I scored a set of 6-3-1 from U-Pullit a few weeks ago and never seen a set before so did some research.... Have yet to fit them but on my to do list now that the Fairlane is registered again..... 1 Stumps reacted to this Share this post Link to post Share on other sites
SLO247 1,713 Posted January 13, 2015 Thats the info I was after. Now do I want to increase the already good low down torque or try to make it rev up high? Going to fit a 350 and redline manifold so maybe the 6-2-1 would compliment those. Share this post Link to post Share on other sites
Thom 6,650 Posted January 13, 2015 You need some 6-1 1 slydog reacted to this Share this post Link to post Share on other sites
tpak addict 1,909 Posted January 13, 2015 Depends on what wether its a stock 6 or cammed and made to rev.... I want to help that 2.77 rear end get some pull down low...... Although since I put the new wheels and tyres on is seems happier to loose traction..... go figure All I have been doing is running it once a week til the engine warms up while it was unregoed and it seems to have thanked me with running very well now.... Driving it to work the other night was heaps of fun in the rain hehe, Nothing like a bit of sideways action on takeoff..... Share this post Link to post Share on other sites
Nath 1,975 Posted January 13, 2015 Thats the info I was after. Now do I want to increase the already good low down torque or try to make it rev up high? Going to fit a 350 and redline manifold so maybe the 6-2-1 would compliment those. Do it! Then sell me the 6-3-1 set - the rustier the better. Share this post Link to post Share on other sites
SLO247 1,713 Posted January 13, 2015 At the moment its just a stock xd 4 speed. I have no idea what diff gears, either 2.77 or 2.92. I reckon you saw it when you bought the suspension off me. Nath those Tri Y ones would be perfect for you. They are rusty and need a flange put on the bottom. 1 Nath reacted to this Share this post Link to post Share on other sites
gerg 10,871 Posted January 13, 2015 Got two sets of extractors here. One set is 6-3-1 other is 6-2-1. Tri Y maybe pacemaker but unsure, other set Motovator. Which set should I use? If the pacies are the 6-3-1s, double win. I'd go 6-3-1 any day. Motivators were a cheap line of Genies i believe. I've not liked Genies for their thin walls. Seen them burn out within a few years, but pacies are much thicker and will last over ten years if you don't wrap them. Share this post Link to post Share on other sites
Clevo120Y 815 Posted January 13, 2015 6-3-1 suit more revs is my opinion, more secondary volume. We have had this conversation before lol, I like the 6-3-1 setup. Share this post Link to post Share on other sites
SLO247 1,713 Posted January 13, 2015 Just the Bloke I wanted to hear from. Will use the 6-3-1 set. I suspect they are paccies but I'm not sure. They look old and need a clean up and a tidy up on the end but that's all part of the fun. Share this post Link to post Share on other sites
gerg 10,871 Posted January 13, 2015 This mod was inspired by Stumper's thread on Street Stock Speedway and the carby mods he's done. When i had my 4011 Holley apart the other day, I noticed that the barrels had some pretty rough casting marks and misalignment between the top and bottom halves of the Venturi. Might not show there but it's like they took the safe approach with their mouldings and made the top half slightly narrower than the bottom (so there's no chance of any ledge jutting out) with a distinct inward ridge all round. I looked at the finish and all i could see was turbulence and restriction, yet on my little 302 it probably wouldn't make any difference, or so i thought. Regardless, i just couldn't help myself... Anyway about 10 min with my little Dremel and this is the result: So i slapped it all back together and did notice a smoother transfer to main circuit but was a little doughy up top compared to before. I figured that more air was flowing around the booster instead of through it, so less fuel was being pulled out and needed more jet to compensate... So i thought (again). Chucked in some 70s up from 67s and it went worse! Yesterday i chucked in some 64s and was slightly better, so today i thought I'd go way down to 61s and blow me down, it's going pretty good! Maybe the extra flow is giving more velocity and more booster signal, so it draws fuel harder. Hard to tell what's the go in this hot humid weather but it's fine for now. What I'm trying to say is that messing with fiddly things like carbies can be trouble and can give you the opposite result to what you expect, but if you're keen to learn then this is the only way. And thanks Stumper for showing what can be done with a bit of man-shed engineering 5 Clevo120Y, Nath, tpak addict and 2 others reacted to this Share this post Link to post Share on other sites
tpak addict 1,909 Posted January 13, 2015 Got a pic Slo of both the extractors..... Not sure on the brand of mine but think they are Pacemakers too... (tag missing) Share this post Link to post Share on other sites
SLO247 1,713 Posted January 13, 2015 The ones I think are Paccies look the same as yours which you think are Paccies. Which Is why I think they are. Share this post Link to post Share on other sites
slydog 7,873 Posted January 13, 2015 You need some 6-1 I would love to try and make some 1 day 1 Thom reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted January 13, 2015 No worries Gerg, I have one word for you that explains the down size in fuel jet, EFFICIENCY!! Your carb is now more efficient and your engine requires less fuel to make the same power, the booster signal will be cleaner etc etc. this is why when people say that if you have more airflow you have to add more fuel but it isn't always the case, an efficient motor will use less fuel for more power and that's in the forefront of my mind when I do my little experiments. 5 Thom, Stumps, tpak addict and 2 others reacted to this Share this post Link to post Share on other sites
Thom 6,650 Posted January 13, 2015 You need some 6-1 I would love to try and make some 1 day Which one's your style? 1 Stumps reacted to this Share this post Link to post Share on other sites
wagoon 2,429 Posted January 13, 2015 An optimised engine will always use less fuel, make more power and torque and run cleaner. Factory setup is always on the very safe side regardless of what you buy as even mass produced performance parts have to be made for the mass market which includes simple holden owners. Thom I would pick the middle collector. 2 Clevo120Y and gerg reacted to this Share this post Link to post Share on other sites
SLO247 1,713 Posted January 13, 2015 Makes me think of rocket exhausts. Share this post Link to post Share on other sites
gerg 10,871 Posted January 13, 2015 No worries Gerg, I have one word for you that explains the down size in fuel jet, EFFICIENCY!! Your carb is now more efficient and your engine requires less fuel to make the same power, the booster signal will be cleaner etc etc. this is why when people say that if you have more airflow you have to add more fuel but it isn't always the case, an efficient motor will use less fuel for more power and that's in the forefront of my mind when I do my little experiments. Good explanation Stumper, I'm pretty stoked too! Just hoping this newfound efficiency shows at the petrol pump... It's been a shocker lately: about 20l/100km 2 Nath and Clevo120Y reacted to this Share this post Link to post Share on other sites
