steve123
8 posts
Joined: 06/10/2004 18:28:11
Location: Swindon United Kingdom (Excluding channel Islands)
HIF44 MIXTURE
Simple question really, which way do u srew the screw to lean off the mixtue (in or out) ?
Posted: Nov 22, 2004 01:26 AM
pmt
5 posts
Joined: 23/01/2005 20:22:02
Location: SAINT CYR SUR MER France
stage 1 with HIF38 or HIF44 ?
Hi, I ve a classinc mini 1275 mot 12A BG04 with HIF38 and catalyst. I d like to fit a stage 1 kit on it, but i wonder if i should keep the HIF38 or take a HIF44 from a Metro before. What do u think i should do ? Thanks pm
Posted: Feb 01, 2005 08:16 AM
wrinkly
59 posts
Joined: 10/09/2004 08:51:29
Location: POTTERS BAR United Kingdom (Excluding channel Islands)
hif44 for hif38
if you can find a decent HIf44 with the manifold it would be a good start . Then you can fit an LCB and do other mods to get more power such as 1-5 hi lift rockers. decent exhaust and maybe a cylinder head. The Carb on its own would not be much good unless you bought a minispares inlet to stick it on
Posted: Feb 05, 2005 03:07 PM
68Moke
33 posts
Joined: 10/09/2004 21:06:12
Location: Lakeville United States
stage 1 with HIF44
My opinion is that with a 1275 and starting to upgrade performance, you may want to start to look for an HIF 44. Also, Wrinkly, I am jealous, you are right there in MECCA, Potters Bar.
Posted: Feb 05, 2005 09:22 PM
Gary
2 posts
Joined: 21/09/2004 07:33:19
Location: LEICESTER United Kingdom (Excluding channel Islands)
HIF44 on Cooper 998
Ive just re-built my Cooper 998 with MD266, 10.5-1 CR, Aldon dizzy, electric fan, electric water pump, freeflow manifolds and a HIF44 carb. Im using the WinSu recommended BFY jet needle for the HIF44 and Im trying to gauge which dashpot spring I need by watching the slide rising under throttle, no matter which spring or oil weight I use I cant get the slide to rise any higher than half way!! As far as I have read the slide should be fully up at full throttle/RMP, is the HIF44 too big or is there a set that will work? The WinSu guide recommends the HIF44 as the ideal carb for this engine, but is it? Thanks for any advice, Ryan
Posted: Mar 23, 2005 08:40 AM
Crashnburn1981
158 posts
Joined: 04/12/2004 16:50:02
Location: glastonbury United Kingdom (Excluding channel Islands)
HIF44
Hi, I read somewhere that the three coloured springs, Red yellow and blue, corrospond to different categories of engine, Red being Naturally aspirated, or midly tuned, Blue being turbo charged and highly tuned NA engines, Yellow being supercharged engines. Not sure if this helps or not, and whether its true, but seems that every set-up ive used on stage one / low tune engines has always required a red spring. Please correct me if im wrong. Cheers Nick
Posted: Mar 28, 2005 10:46 PM
MrJenkinsEsq
29 posts
Joined: 05/11/2004 13:06:45
Location: Manchester United Kingdom (Excluding channel Islands)
HIF44 carb clearance
I have a mk1 mini with 998 engine with cooper head, cam, maniflow exhaust, manifold and inlet. The trouble is that there is no clearance between the carb itself and the bulkhead. Has anyone else had similar problems? Is it possible to remove the plastic spacer between the carb and inlet, or would I have to I modify the bulkhead? I have seen other 998s with HIF44s. Also, where would the throttle return spring attatch to on a hif44? Finally, if i listen closely, there is an occasional quiet popping sound from the dashpot. Is this normal? This is our first mini build, so it is all a bit new!
Posted: Aug 29, 2005 09:00 PM
Minbinz
Joined: 14/01/2005 14:30:12
Location: Louth United Kingdom (Excluding channel Islands)
HIF44 Carb variation
Hi, I have just recently purchased a new HIF44 carb from ebay at a pretty good price when I received it and checked it out , it had an identl tag on with FZX1475 on. Further investigation shows it has a BFM needle and is for a Montego 1600. Further checking shows that the HIF44 used on the metro has an ident tag with FZX1409 with a BDL needle.
I want to use it on the Metro 1275 I have just transplanted in my mini.
Q Is it just the case of swapping the needle out to use it on the 1275 or is there more to it than that ?
Posted: May 22, 2006 06:44 PM
i beleive that as long as it is a HIF44, then it can be used, would check the jet / dashpot spring to make sure they are correct.
Nick
Posted: May 22, 2006 10:41 PM
Thanks , I will check those out
Posted: May 23, 2006 04:01 PM
Woody Mk1
9 posts
Joined: 04/11/2004 17:10:51
Location: N.T. Hong Kong SAR
SU HIF44 needle question
Hi, Could any one help with the recommendation of a SU needle used for my engine, 1310 S with 731 cam and single HIF44 metro SU, is BER good for this engine?
If using SW5 cam, any experience of using an optimum needle? instead of going to Dyno trial.
Alfred
Posted: Feb 21, 2007 05:17 AM
John
1948 posts
Joined: 28/05/2006 16:49:46
Location: cambridge United Kingdom (Excluding channel Islands)
needle selection is purly gess work without having an identical engine setup to compare with. so many things affect it, airfilter type, ram pipes, modifications to carb, intake manifold design, porting of cyclinder head, valve size, exhaust system and last but not least camshaft. so no one can tell u want needle is needed with a particular cam unless everyting else on there engine is the same. But you can have a fair gess and then improve on it. this is basicly what they do at the dynamo asept they can judge better what one is reqired after first cuple of atempts if you want the best power you will have to do this. but if you dont want to spend that money we can have a go at trail and improvement. as your car is well tuned it will reqire a richer needle. this doesnt mean mixture will be richer but if u used a std needle would go too lean as too much air is passing it for it to supply enouth fuel to match. id expect BER to be far too lean its almost identical to a std metro mixture. id gess a BDK needle is more likly to give correct mixture. you also have to think about the spring in the su with highly modified engines the piston may move up too quickly so at just 4000 rpm it is at its richest mixture as rpm increases further then the mixture leans will give u a flat spot on power curver plus risking engine failure due to lean mixture damaging pistons and valves so dynamo is best with well modifyied engines its money well spent. what id recomend u do is get a close match then take it up dynamo and get it tuned spot on this will cut down time on dynamo.
Posted: Feb 21, 2007 11:47 AM
Luke6040
210 posts
Joined: 17/11/2005 17:00:38
Location: Wolverhampton United Kingdom (Excluding channel Islands)
HIF44 trouble
Hey,
Iv been working on a 1987 998 mini fitted with a hif44 carb it was working ok when removed but it kept flooding so i replaced the needle valve with a smaller bore replacment, but now it will die if u put your foot down.
Do you think i should put a lager bore valve back in and just mess with the settings to stop the flooding or is the smaller one ok?
Thanks, Luke
Posted: Feb 26, 2007 02:30 PM
firstly a HIF44/6 is too big for a 998 so you will only loose power due to slow intake velocitys, if the 998 is producing over 65bhp it will gain a lil at top end but hif38 would suit alot better if not twin hs2/hs4/hif38(4) on a maniflow intake manifold would be good. (if u free flow insides of hif38/hs4 acording to david vizards a series book then u will have flow aproching hif44 but high port velocitys to increase power.) i would cheak your float in the carb might be damaged and put correct needle valve in it tho.
Posted: Feb 26, 2007 05:51 PM
Hey
Iv told him all of this about the sizes but not my car so ... you know lol.
Well this is the thing what is the correct needle valve? burlen say small bore but it seems lacking, is this just me?
Luke
Posted: Feb 26, 2007 11:33 PM
when u say flooding u just mean its running too rich? if it is then ul find it hard to get a lean enouth needle for std 998 i would expect.
Posted: Feb 26, 2007 11:49 PM
hey,
No sorry thats my fault again i was reading summit as i way typing, i mean the float chamber was over flowing, iv set the float now and but a small bore needle valve but now it seems to be struggling.
Posted: Feb 27, 2007 11:03 AM
zesty
6 posts
Joined: 15/03/2007 14:37:45
Location: United Kingdom (Excluding channel Islands)
fitting a hif44
when fitting a hif44 carb should it sit straight/level?
after trying to fit it yesterday to my manifold (which is angled) with no luck its the only thing we can think of being wrong lol so can anyone let me know and also let me know where i can get a straight manifold at a reasonable price
Posted: Mar 30, 2007 09:50 AM
E. Hodson
95 posts
Joined: 19/06/2006 21:43:15
Location: APO United States
ur not trying to fit it to a steel hs4 2 bolt manifold are u? if u are its pointless as u need a manifold equal in diameter if not larger than the carb throat. if u mean the hif44 is dipping slightly towards u in the engine bay this is fine as they are semidown draft. they need to be like this so the airfilter can clear the bulk head.
Posted: Mar 30, 2007 07:37 PM
no its an alloy inlet similar to the mini spares one but not if you know what i mean lol
just wondering as we have tried everything and the car still will not start and wanted to check :D
Posted: Mar 30, 2007 08:07 PM