Throttle Body Sizes

c mathis

c mathis

Active member
I am going to post what we have so everyone can verfiy what we have is correct and so you can help me fill in what we do not have.
HP
Manufacturer Model Years Primary Secondary
Fiat X-1/9 1500 54mm
Ford Festiva 88-93
Honda Civic/ Civic Si 84-87 33 mm 42 mm
Civic 1.5 litre 88-91 42 mm
CRX/ CRX Si 84-87 33 mm 42 mm
CRX 1.5 litre 88-91 42 mm
Fit 07-09 45 mm
Mini Cooper 02-06
Porsche 914-4
Renault Alliance 1.4 litre
Alliance 1.7 litre
Suzuki Swift 1.3 Litre 89-94
Toyota Yaris 06-09 45mm
Volkswagen Golf GTI, GT, GL 1780 35 mm 52 mm
Jetta 1780 85-91 35mm 52mm
Rabbit 1780 Cabriolet 35mm 52mm
Rabbit 1588 35 mm 44 mm
Rabbit 1715 81-84 35 mm 44 mm
Rabbit GTI 1780 83-84 35 mm 52 mm
Scirocco 1457/1471 35 mm 44 mm
Scirocco 1588 35 mm 44 mm
Scirocco 1715 81-84 35 mm 44 mm
Scirocco 1780 8V 83-88 35 mm 44 mm
 
FP
Manufacturer Model Years Primary Secondary Alternate
Acura Integra 1600 86-89 55 mm
Integra 90-93 58 mm
Integra LS 95-01 60 mm
Alfa Romeo Alfetta GT and Sedan 75-79
GTV 1750 67-72 34 mm restrictor
GTV and Berlina 72-74
Spider 72-89
BMW 2002tii
BMW 320i/is (E21) 77-79 48mm
Dodge Shelby Charger/ Omni 024 83-84
Fiat X-1/9 & Bertone 54mm
Honda Civic/Civic Si 84-87 33 mm 42 mm
Civic 1.5 litre 88-91 42 mm
Civic Del Sol 60 mm
Civic Si 88-91 55 mm
Civic Si 92-95 56 mm
Civic EX VTEC SOHC 92-95 56 mm
CRX 1.5 litre 88-91 33 mm 42 mm
CRX/ CRX Si 84-87 42 mm
CRX Si 88-91 55 mm
Prelude 84-87
Mazda 626
GLC 323
Miata 1.6 litre 55mm
Mercury Capri 1.6 litre 91-94
Opel GT
Manta
1900
Porsche 924
Saab 900
Saturn SL2/SC/SC2
Suzuki Swift GT 52 mm
Toyota MR-2 1.6 litre 85-89
Volkswagen Golf 1.8 litre 85-92 35 mm 52 mm
Golf III
Jetta 82-84 35 mm 52 mm
Jetta 1.8 litre 85-92 35 mm 52 mm
Rabbit 1457/1472 35 mm 44 mm 35/52 mm
Rabbit 1588 35 mm 44 mm 35/52 mm
Rabbit 1715/1780 35 mm 52 mm
Scirocco 1588 35 mm 44 mm 35/52 mm
Scirocco 1457/1471 35 mm 44 mm 35/52 mm
Volvo P1800
142
 
EP
Manufacturer Model Years Primary Secondary

Acura Integra 86-89 55 mm
Integra GSR 94-00 60 mm
Integra Type-R 97-00 62 mm
Alfa Romeo Alfetta GT 75-79
GTV 2000
GTV-6 81-86
Spider
BMW 2002/2002tii
318i/320
Z3 1.9 litre
Z3 2.5 Litre
Z3 2.8 Litre
325i/is 84-91
318is 91
318is E36 92-95
Chevrolet Cavalier 2.0 82-87
Dodge Neon 95-99
Neon ACR 01-02
Omni GLH 2.2 litre
Shelby Charger/ Omni O24 83-84
Fiat 124 Spider 1.6 and 2.0
Ford Escort 1.9 85-87
Probe 93-97
Honda Civic Del Sol Si 93-94 56 mm
Civic Si 99-00 60 mm
S2000 00-08 62 mm
Prelude Si 60 mm
Prelude Si VTEC 93 60 mm
Hyundai Tiburon FX 2.0 97-98
Caterham/Lotus 7
lotus Elise
Mazda Miata 1.6 55mm
Miata 1.8 94-97 55mm
Miata 1.8 99-02 55mm
MX-5 06-09 60mm
Protégé ES 01-03
RX-7 12A
RX-7 13B
RX-8
Mercedes 190E 2.3 84-93
Mercury Capri 2.3 79-86
Nissan 200-SX S10 77-79
200-SX SE-R
240-SX S13/S14 91-98
NX-2000
Senta SE-R 90-94
HL510 78-81
Pontiac Fiero 2.8 85-88
Solstice 06-09
Porsche 944/924S 2.5 2V 83-88
944S 87-88
Saturn Sky 07-09
Toyota Celica II 2.4 81-82
Celica 2.4 83-85
Corolla GTS (4AG) 84-89
MR-2
Supra 82-85
Volkswagen Golf GTI 16V 87-88 35mm 52 mm
Volvo P1800
 
Fiat X1/9 in FP and HP - I measured the street car and got 54mm/2.126"
Haven't been able to find any documentation to confirm.
 
Chuck,

I believe the 1780 Scirocco had the same throttle body as the 1715 Scirocco's - they definitely do not have the larger Golf throttle body. I will check.
 
Bob, I will update the list with your Fiat info.
I think all 1780 VWs had the big throttle body.
Thanks Chuck
 
Chuck, I measured the Scirocco 1.8L throttle body and it is the smaller, 35/44. It would be nice if the prod committee allowed the larger throttle body and the necessary porting of the intake to accept it!! thanks
 
S. Henry":g9d8yj07 said:
is this for adhoc?

sam
Click to expand...

Yeah why?

Our World Challenge car makes just over 500 horsepower and the restrictor is like 44mm. For 99% of what's above, the throttle isn't what is controlling the power.

And I believe the Festiva has a 45mm throttle body (on the EFI setup - don't know what the carb is). I can check it tomorrow.
 
Ummmm - aren't all A1 CIS VW throttle bodies the same size?

FP 1588s have a specific line entry for the bigger one, all others including 1780 should be the same I think.....

Al Seim
HP Scirocco 1.6

edited - had incorrect dimension
 
Al Seim":38vrihpy said:
Ummmm - aren't all A1 CIS VW throttle bodies the same size, ie 33/45?

FP 1588s have a specific line entry for the bigger one, all others including 1780 should be 33/45 I think.....

Al Seim
HP Scirocco 1.6
Click to expand...

Pretty sure the A1 GTI had the bigger one. For sure the early 90s convertible did. I thought the 85-88 non 16v scirocco did too. I will double check.
 
I think a better question than "why?" would be "why not?" I hope that the numbers gathered here are just for reference, that they are not printed in the rule book unless verified by factory parts manuals, and if in error, they do not "accidentally" legalize a non-stock throttle body.
 
All the A1 VW 1.8L "JH" solid lifter engines had the 35/44 throttle bodies, the larger throttle bodies were on the A2 hydraulic lifter RD, HT - CIS GTI engines and all digifants.

All 8v MK2 Scirocco's from 1983 thru 1988 had the JH engine, I believe all the A1 Cabriolets also had the JH. All A2 Golf's had hydraulic lifter heads.
 
We are using this to gather info and get alot of eyes checking for facts. Bill you are right, I will change the Scirocco back to the smaller size. This why I want the group to see this. I would have bet money the Scirocco had the big one and I am "VW expert" oh well. I think alot of shop manuals don't call out throttle body bore sizes. There is just not one official place to look up the sizes for all cars so we will gather the info the best we can and have have everyone try and catch the mistakes.
Thanks Chuck Mathis
 
HP Rabbit GTI should be small, too, correct? Not sure re the Cabrios, did they have big throttle bodies post CIS?

FP 1.6 A1 gets the big one via PCS line, but FP 1500 does not (at least in the January 2012 PCS).

Al
 
You must log in or register to reply here.
Back
Top