1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Blow through turbo

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Old 05-11-06, 01:43 PM
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weber 45 dcoe, 40mm chokes, 65f9 idle jets, f-11 e tube, 195 mains, 180 air correctors, 55 accel pump squirters.
Old 05-11-06, 05:50 PM
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Wow, I'm running 220's on the mains, and like 45 or 50f9 on the idle jets! haha, and I've got a 12a with a streetport

I seriously need to do some tuning.
Old 05-11-06, 08:06 PM
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Old 05-11-06, 11:45 PM
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*fart*
Old 05-13-06, 01:22 AM
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So What I'm geting is that there are only 5 blow through cars in the US and 3 of them don't run right.. HUH...
Old 05-13-06, 07:22 AM
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haha, that's how I feel half the time. It sucks sometimes knowing that youre probably the only person you can rely on to get your car straight, but it's pretty nice once you do get it in top shape.
Old 05-13-06, 12:43 PM
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This and a few other things are makeing me want to not be a purest anymore and just scrap the whole carb thing.
Old 05-13-06, 01:00 PM
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Mine is down now too, the really old stock engine died. When it was up and running it was reliable enough I believe to autocross. I made about 25 passes at the 1/8th mile track and drove it home with out a problem. I guess the thread was too long and I missed the problem you are having. Ill tell you it took almost a year for me to work out the bugs in mine.
Old 05-13-06, 01:50 PM
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What did you do to work them out? where did you reference your FPR? Right at the turbo or at the carb hat, or in the manifold. What fuel pump were you using?
Old 05-13-06, 07:26 PM
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Originally Posted by Hyper4mance2k
weber 45 dcoe, 40mm chokes, 65f9 idle jets, f-11 e tube, 195 mains, 180 air correctors, 55 accel pump squirters.
put 36mm venturies in the carb, that will fix alot of your issues trust me!
also try smaller air correctors. like140's and get a fuggen efi pump!!
Old 05-13-06, 07:27 PM
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Originally Posted by mikey D
the car will run quite a bit differnt on and off the charge pipe.

the chargepipe and turbo add alot of restriction to the intake so you have to tune all the idle and offboost stuff with everything hooked up.
100% correct mikey!!
his blowthrough setup ran **** too!
Old 05-13-06, 08:01 PM
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36mm Holey ****! It ran perfect with the 40mm why would I want to go down? Welp I've got 38's laying around I'll try those.
Old 05-13-06, 08:44 PM
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hyper4mance2k: I Installed my Walbro 255 tonight, made a big difference in the performance of the car! I can really tell I wasnt getting enough fuel at full boost. Did you happen to have any problems iwth the car stuttering and losing power at high rpm's/full boost? I dont think it's knocking, but more of a popping noise coming out of the exhaust. It's weirding me out, i'm afraid to drive the car
Old 05-13-06, 09:06 PM
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Originally Posted by Hyper4mance2k
36mm Holey ****! It ran perfect with the 40mm why would I want to go down? Welp I've got 38's laying around I'll try those.
wtf!! 38 is not 36!! YOU NEED 36!!
the carb ran good n/a with 40's but will run like **** with 40's on a boosted 45, bottom line.. stop f*cking around

and you need a FUEL PUMP..
your wearing me out man!!!!!

your car will never run good unless you listen and follow directions.. just junk the seven, wackyracer will pick it up from ya
Old 05-13-06, 09:09 PM
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Originally Posted by Sudox_E
hyper4mance2k: I Installed my Walbro 255 tonight, made a big difference in the performance of the car! I can really tell I wasnt getting enough fuel at full boost. Did you happen to have any problems iwth the car stuttering and losing power at high rpm's/full boost? I dont think it's knocking, but more of a popping noise coming out of the exhaust. It's weirding me out, i'm afraid to drive the car
the popping is most likely your weak ignition system cutting out from the safe rich mixture.. what spark plugs are you running? are you running msd 6a boxes? get some b9eg, or b9ev or b9es spark plugs from your local motorcycle shop, gap the plugs to .015 and your sputtering should be gone
Old 05-13-06, 09:37 PM
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Originally Posted by 680RWHP12A
wtf!! 38 is not 36!! YOU NEED 36!!
the carb ran good n/a with 40's but will run like **** with 40's on a boosted 45, bottom line.. stop f*cking around

and you need a FUEL PUMP..
your wearing me out man!!!!!

your car will never run good unless you listen and follow directions.. just junk the seven, wackyracer will pick it up from ya

Hoooooooooo! Hyper got in trouuublllle.
Hehehe
Old 05-13-06, 10:39 PM
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Originally Posted by 680RWHP12A
wtf!! 38 is not 36!! YOU NEED 36!!
the carb ran good n/a with 40's but will run like **** with 40's on a boosted 45, bottom line.. stop f*cking around

and you need a FUEL PUMP..
your wearing me out man!!!!!

your car will never run good unless you listen and follow directions.. just junk the seven, wackyracer will pick it up from ya
When I read this I laughed for like 5 minutes allright allright I'll shut up. I should be getting a pump this week. and I'll see about some 36mm chokes. What about 32's would those work? LOL! J/K ha ha haaaaa.
Old 05-13-06, 10:40 PM
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Originally Posted by Kim's FB
Hoooooooooo! Hyper got in trouuublllle.
Hehehe
LOL!!! HA ha haaa that's what I was thinking!
Old 05-14-06, 01:09 AM
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Originally Posted by Hyper4mance2k
LOL!!! HA ha haaa that's what I was thinking!
nobody's in trouble, im just tired...
hi, kim
im going to eat sum more cheese now.....
Old 05-14-06, 01:12 AM
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Originally Posted by 680RWHP12A
wtf!! 38 is not 36!! YOU NEED 36!!
the carb ran good n/a with 40's but will run like **** with 40's on a boosted 45, bottom line.. stop f*cking around

and you need a FUEL PUMP..
your wearing me out man!!!!!

your car will never run good unless you listen and follow directions.. just junk the seven, wackyracer will pick it up from ya

lol
Old 05-14-06, 01:16 AM
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Hah, that owned. Kudos for Robert.
Old 05-14-06, 02:38 AM
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Yea actually I think that's the first time I got straight owned on the forum. Now If I can only find a pump locally. I hate waiting for shipping. Especially since I need to get this thing going by the drive next Saturday. Although I did find the wallbro pump online for $119 @ lightningmotorsports.com.
Old 05-14-06, 03:22 PM
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some of us have been turbo for a long time and slogged thru these stupid issues.
when we say you need an EFI pump we arent bullshitting you...
its not an option, you need it.
Old 05-15-06, 01:35 AM
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Done allready I've got one and issues persist... next is 36mm chokes.
Old 05-15-06, 12:14 PM
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how is your timing set?
wheres is your boost referance line hooked up.
how much psi are you running at idle.


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