View Full Version : efi conversion
floater05
19-03-2009, 08:25 PM
efi conversion complete
car that it went into- carby 1989 tp glx manual
donor car - efi 1989 tp glx manual
this is what i pulled off the donor car and put in.
o Inlet Manifold.
o Throttle Body.
o Throttle Cable
o Air cleaner.
o Fuel pump. we changed the whole tank rather than just the pump. it seemed to be the easiest option
o Fuel line. tried to change this but it was working for us. instead we modified the carby fuel line to cope with the extra pressure. (put heavy duty hose clamps on, the ones you do up with a screw driver)
o Fuel filter. this required fuel line modification
o Solenoid Valves + Hoses.
o Top Radiator Hose + Heater hoses.
o Igniter.
o Distributor.
o Main computer.
o Fuel injection relay.
o Loom. the loom went straight in and plugged in, with no modifications
o Exhaust Manifold
o Exhaust pipe. we changed the whole pipe its by far the easiest option.
i done most of the work myself but had help from an apprentice mechanic about half of the time. it took 3 solid days of work and we only stopped work because of how early it was getting dark.
the biggest issue we faced was getting the dizzy timing right. but we got that sorted in the end.
we are now in the process of converting the donor car to carby. so i can sell it basically.
Blazin'
19-03-2009, 10:01 PM
sounds alright. I wouldnt think you'd need exhaust/exhaust manifold though? actually, possibly the exhaust manifold cos it has a sensor on it. but not the entire exhaust surely?
and regarding fuel tank/head. no, i don't think you should need to do that... I used a carby head/motor on my efi car. all i did was take off al the carb parts from the motor and put it into the efi car. thats the much easier way around haha.
but wait for madmagna or magna buff to reply. they are experts on these things :cool:
You will need to swap over the front half of the exhaust due to the Efi having its Cat halfway along the exhaust system while the carby model has one at the manifold. I'm 90% sure the rear half of the exhaust systems if different carby to efi but I'm not sure how much is interchangeable.
floater05
24-03-2009, 02:54 PM
*bump*
anybody else that might have something to add? i will hopefully be starting this soon.
floater05
07-04-2009, 09:42 PM
will be starting this tomorro, since im back home all safe and sound.
will start by removing the carby parts from my daily driver. and i will drive the other car around while we do this.
likely be starting on the exhaust. will likely be swapping the the entire exhaust over as the only joins in the carby exhuast are at the manifold and the rear muffler. whereas the the efi has joins all over the place.
not sure where we will go after that. but ill probly take some pictures and keep the thread updated as we go.
floater05
15-04-2009, 11:24 AM
efi conversion all complete im going to post up details in the first post about wat we had to do and how we did it etc. for any1 who might be looking at doing this in the future.
Shaun92
25-04-2011, 10:57 AM
im planing to do the same onec i get an efi doner car. its more or less bolt off bolt on?
old magna
26-04-2011, 01:18 AM
although ive never dont a conversion ive had it all apart. the manifolds are meant to all be the same bolt paten all through the aston 2 range. i know 1st and 2nd gen are from experience. apparently its worth using second gen parts anyway. just makes it harder if your car is auto but you could prob separate the auto and engine looms. also you have to mount the second get air box somewhere.
but all manifolds should be the same. loom is very simple to remove. worst thing about it is a securing clamp under master cylinder which either requires removing the booster or allot of patience and an 10mm open ender. there is 2 plugs for auto computer, 2 plugs for engine ecu and another 1 or two for starter and power feeds under the dash.
hope this helps
Shaun92
28-04-2011, 10:52 PM
ive got the efi of an astron 2nd but it was out of a TR i know its going to be a pain in wire loom side but it should all be all the same in engine magiment side but what about aircon and dash cluster?
old magna
29-04-2011, 10:05 PM
im not 100% and im sure someone else will clear it up but apart from taco sender wire i dont think there is much else thats engine management looking at a diagram. maybe temp senders? is yours auto or manual. auto will be a total pain in the ass to splice to two looms together cos of the split the wires from the tps to the tcu and the like. also you will have to figure out what inhibitor wires run where so really you need both looms out and start untaping and pulling wires out then soldering and connecting what needs to be. few hours worth there ide suspect. charcoal canister vacuum system should be the same. i suppose in saying that seeing as yours is carb if its auto the wires to the box will prob alredy basically be seperate so you will just have to work out how to conect tps to tcu.
as far as im concerned the tp efi system is bullet proof. ive never had a problem or heard of real problems. having pulled the whole lot out and apart it seems simple and strait forward. does waste a bit of fuel tho ide imagine. i know the tr has better plenum, injectors, tps ect but if its an daily driver not performance then the power gains cant be that much better. going from carb to efi is like going from sand paper to cleanex anyway no matter what it is.
also dissys may be different im not sure. i just compared numbers and tp efi is the same numbers as tr and works. dont know if carb is different. if you like ill get you the numbers later so you can compare.
there will be a differance in power feeds to the ecu ect but if you can get it running independant of the current loom then its just a matter of connecting it up off ignition and a power feed i suppose. also make sure you have an manual or auto relay box depending on what you have as i found them to be different. dont know about anything else. other thing is i would imaging fuel pumps are different.
so anyway there is a few things to think about. im no expert by any means but might give you a few pointers.
old magna
29-04-2011, 10:57 PM
thats the other thing i was going to mention. the tr plenum is different. ive heard that it dosnt fit well in 1st gens but dont know about that one as when i did the engine conversion from tr to tp i used the tp one.
Shaun92
01-05-2011, 06:13 PM
thanks a alot has cleared a lot up, did have a good look and there is not much to splice into should be nice and symple, if the tr injectors and ecu are better do u know if they will fit straight in?
Shaun92
01-05-2011, 06:18 PM
the tr plenum thats the piping that comes from throtle boddy to the block?
Shaun92
01-05-2011, 11:28 PM
I've read in one thread of having to move the engine forward is this necessary?
old magna
02-05-2011, 02:03 PM
my engine has been moved forward (manual conversion) on the torque stays and where i measured the tr plenum would stick about 15mm into the fire wall so unless you do radical work it will never fit with acceptable clearance to allow engine movement from what i can see. the good thing is that you could use your 2nd gen electronics on a 1st gen plenum as far as im concerned as the throttle bodys / tps (throtle position sensor) are a strait bolt up ect. i dont know if the tr computer will work ok with the different plenum tho as it might change some of the parameters???. but that will cost you allot less but then you still need to do the wiring change. but if your going to have to get a first gen plenum ide go the full monty and get everything becuase really with the wiring difference and the plenum difference its barly worth mucking around with. i would be looking for someone to swap the whole tr kit with a first gen one to make it easy on your self. i have an old auto computer out of a first gen and would have had the full loom had i not got pissed and cut it out (about 1.30am and it was playing games with the brake lines so out the side cutters came). only thing is mine is tp so you need to get the rest out of an tp but then tranny connectors will be different.
As far as i understand the runners are the 'pipes' from the ports that have the injectors poking through the end of them and the square cylinder up top that they connect to is the plenum. the problem is the flange that connects the two as it sticks to far back and no matter where you move the engine on its original mounts it will never have enough clearance from the fire wall.
injectors can be fitted strait in but ecu had different plugs.
i also rang my local wreckers he said he would charge under a hundred for everything off a tp (loom, plenum, tps, injectors, fuel pump, ecu ect) so that seems very reasonable to me but i dont know if you will find a cheap wreckers out your way
so anyway chew over that and if ive missed anything dont be scared to ask.
regards jay
Shaun92
02-05-2011, 02:17 PM
bummer your in victoria u guys have heaps of parts there, thanks for that info that will be one hickup ive had so far, im gussing the postage would be a fair bit but it looks like my only option to efi my engine. if u could give a ruff estamite of weight and dimentions i could find out how much it will cost to get to wa the see if its worth it.
thanks jay
old magna
02-05-2011, 04:38 PM
ide prob be able to pack it into a box 500x500x500mm and i would estimate at least 10kg all up so if would prob cost a fair bit (ide say well over $50 with aussie post). and if you wanted me to remove it for you i would charge an hourly rate of $20. shouldn't take allot more than an hour and a half but you never know. its just im busy with work and other commitments so would need to make time up. to save some cost ide throw a computer in if ive got a suitable one. thats providing you want the whole lot. otherwise the plenum would prob be under $50 from the wreckers here and take me half an hour to remove.
otherwise im sure someone else would have a plenum sitting around. the other thing is if you were top use the tr bits you might have trouble fitting the air box in because of its depth although im not sure.
maybe put an wanted add up or offer an exchange or something. even if you paid postage both ways it would prob be cheaper.
otherwise parts cars are very cheep in crappy condition although depending where you are in wa it would depend wether you could find one. ide say you could pick up something rusty or with cruddy auto or engine for about $300 then sell it for scrap. just keep a look out on ebay.
regards jay
Shaun92
03-05-2011, 12:34 PM
well i can get the tr harnes and computer to work in my tm so that not a problem ( allready got the harnes customised ). it would just be the pendlum and fulepump. if you can get in into a box 400x300mm by what ever lenght australia post will take it and it will be under 50 bucks for 15kg, so given that defentaly interested in getting the parst if could give me a cost on parts and labour will be hapy to make a desision on it. its when ever u have time as well, ive got the same prob as well not enough time in the day,
Thanks
Shaun
old magna
03-05-2011, 10:43 PM
should get it into that size box. even if i had unbolt the runners. if its only fuel pump and plenum / runners then that shouldn't take me more than an hour to get out. prob a bit less. you will need fuel reg and injectors to suite but dont know how they fit into the tr loom. ill look tomorow as i cant remember if the tr even has a regulator. should also get change from a $50 for parts as well.
im going to the wreckers tomorrow so ill get you a solid quote. foir just those bits it will be way under 10 kg anyway. possibly 6/7. but thats a guess.
thanks
regards jay
magnaman89
03-05-2011, 11:05 PM
hi jay he wil need 1st gen fuel pump and sadan .as sadan and wagons have diff pumps . i can get the pump out of elante if needed.
Shaun92
04-05-2011, 08:26 AM
Ausom thanks guys on the end of the tr fule rail it does have a regulator, thanks magnaman for the update on pumps, thanks again for your help
Shaun92
11-05-2011, 08:16 AM
hi jay any luck on getting the parts yet?
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