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1.8L TB Upgrade
http://www.4g61t.org/forum/viewtopic.php?f=27&t=2646
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Author:  summit1.6 [ Thu Jul 24, 2003 3:58 pm ]
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what cyclone you want?
1gen
2gen? i will call him tonite cause they are all at work ATM

Author:  colt-r-old [ Thu Jul 24, 2003 5:16 pm ]
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Paul, i will sell my 1.5 intake mani and head.. with everything attached.
really cheap

Author:  HondaHunter [ Thu Jul 24, 2003 5:53 pm ]
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Quote:
Paul, i will sell my 1.5 intake mani and head.. with everything attached.
really cheap
how many miles are on the head?? coz i dont want to throw a fairly recently rebuilt head on and blow up my bottom end....gotta remember i have around 70,000 miles on my head and 285,000 miles on my bottom end.....throw me a price for your top-end and a price for just the intake....you got the 12v head right?

Author:  socrateez [ Thu Jul 24, 2003 6:19 pm ]
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Quote:
k...coz i was like WTF...then it clicked that the 12v and 8v TB have diff bolt patterns......also could i get away with swapping 12v upper intake manifold and bolting it onto the 8v head? so i cant do the 1.8 tb.....or do i need to do the whole conversion?
I believe the 12 valve intake is a single casting while the 8 valve intake is a two piece. Port shape and sizing is completely different as well.

Author:  colt-r-old [ Thu Jul 24, 2003 6:31 pm ]
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the head... has alot of km's on it... 280 000...
the engine is still strong i still get awesome mileage, doesn;t burn oil.
i'm assuming you'll need the exhast mani? its cracked but the car passed emission with flying colors.
i wont decline any reasonable offer. its a 4g15... cant be worth that much.
i'm just worried about shipping to you... your a good 4500km away.
if you buy the stuff, i mind as well give you all the intake stuff.
of course everything will be included, i'll just unbolt it from the head, take off any wires/line and put it in a box.
let me know man.
the #4 injector needs new seals... if you floor it, it bogs out... i put some some seals from my 450cc injectors and they worked great. i could chirp the tires going into second. but the seals wore off and now it leaks again.

Author:  HondaHunter [ Thu Jul 24, 2003 10:44 pm ]
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well if the intake manifold from the 12v head will bolt up to the 8v head then i just want the intake manifold. find out how much it will cost you to ship it to Hesperia, California 92345 is and ill start saving up some more cash. :wink:

Author:  DarkHorse [ Sun Aug 24, 2003 3:28 pm ]
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reading up on old posts, i came across this. I read the top 2 posts and called the local wrecker. they had a TB in stock so my bro and i went for it. got it and tried to put it on. no luck. reading further, i realized the problem is in the 8 valve head... so, like hondahunter, i am wondering what mods would be necessary to get the 12 valve intake mani' on the 8 valve head. my bro is a great welder, and we have the manifolds to spare. is it as simple as cutting the flange off and weelding the different one on, porting it and voila?

Author:  Berserko [ Sun Aug 24, 2003 4:27 pm ]
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No much more than that because all the electronics on the TB are different...

Author:  DarkHorse [ Sun Aug 24, 2003 5:55 pm ]
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D*MN, to adapt it would increase the volume, right? so is there any way to get a bigger throttle body on the 8 valve? can it be bored out or anything? this is a key part of out increase overall engine flow idea! filter, intake, TB, portmatching intake mani', port/polish, port matching exh. mani', 2.5 all the wayback. this seriously impedes the flow :cry:

i have faith in the cobined genius of the people on these boards...

Author:  socrateez [ Sun Aug 24, 2003 6:42 pm ]
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The intake from the 8 valve wont fit on the 12 valve. Different port design, spacing, and sensors are different on the TB.

Author:  Berserko [ Sun Aug 24, 2003 9:46 pm ]
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Of course the TB can be bored by a machine shop but that will cost $$$ you could probably bore it +5 mm and then port match your Intake mani...

Author:  socrateez [ Mon Aug 25, 2003 6:32 am ]
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Making the TB fit and wiring in the sensors isnt so bad. Even tho the TB isnt a direct match like the 12 valve, it can be done. The only real difference is is splicing the sensor wires.

Author:  steuts84 [ Sat Sep 06, 2003 8:04 pm ]
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i recently found a throttle body off of an 1.8liter eclipse on ebay....i bought it for my 89 colt - 8 valve....the installation of it will be complete tomorrow, all the connectors and hoses are the exact same, so i think it will work great......i'll let all know how it goes tomorrow, just thought i'd share

Author:  HondaHunter [ Sun Sep 07, 2003 3:50 am ]
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how the F**K are you pulling this off? seriously i wanna know!!!!!!

Author:  socrateez [ Sun Sep 07, 2003 8:07 am ]
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hmm. I thought the 89 8valve uses a different TB, bolt pattern etc.
Whats your year,make, model engine, code, etc.
If you have a 8 valve engine that will accept the 1.8l TB, i know lots of guys here would like to know as the intake may be different. :-? Maybe theres hope yet HondaHunter. :wink:
IMHO the 12 valve engine has a lot easier upgrade path.

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