Blowthrough Carb How-To pictured here loict

Blowthrough Carb How-To pictured here loict

Page 1 of
Blowthrough Carb How-To
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$o ynu want to buiid a bl*wthrough *etup, but hev* no idea hnw t* setrrp th* carb? Well, just fallow
the in$tril{:ticng anrj che,ck oirt lh* rcforence pics ancl you will he well sfl ycr*r way Please read the eatire
article hefare nnoctifuing ynur carhuretor ** yo* have m full r"rnd*rstanding of what rieerje to be d*ns.
Rem*rnber, if you nrodify your carb as per the following instr*cti*rns, ii will be sel ltP fur: hierr*through, hut
rr*f funed for blnuvthrough^ That parf is t tp t* yott
Fir*t, you'll need a carb. For this article. wetll he using a Hcllev 4t $ff Series 750 daubl* pulnpef,
pictured here loict Alithe fnllowing rrrocJificatrons willworlq on any dor,hriei ptrnlper, tegardless of stEe
iranr 6CIfi-S5fi. TheV rrv-ill al*o wsrk on *r"ry liolley cione, like th<: Flarry firani "*lm'.ru" $Brie$rtul r)r ilernonrrd
carhuistors" *tust lie*fru,s& wfi'rffi usi*E a l-k:lleV dnesn't mean ntf"rgr cari:s vueinl.{ vrnrk. i-lnllny's ate just
the most popular and eeisiest tb rnnriify fnur barr*i, nnd part* ere very easl; to acqttire" $peaking ef parts,
here is a list uf part$, ae w*ll as t*nln, that you wlll need to mcriifv your *arhuretnr: Ipi4
T'**i*;
H5*rt*: t$]#r"f.*
lruitil"fr
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up:tE*nmfi
the tools and parts tagether, disassemblv of the carhuret*r r:an heEin. Kenp all
cld gaskets fcr comparison with ihe new oneg from the kit. Each kit will have gaskets thr a few different
rn6dels, nnd some *f th*rm ar* viftually identi*al til the Llntrffined eye. First, make *ure ihe *arh i* #mpty
Now that
r,rue
have
altr
of fuel" Please, u$e c$rnmo* sen$s hei* p**ple: f,arburstors anef their:parts *':ay he **verc*d *r *mtltrai*d
with fr.lel. Make sure you wcrk sn ysl:r carh away from heat, sparks or cpf,n flame 'rhat alsc t'ii*ans ns
smakingl
ilf;nasnernbly
Firsl, remcv* ttrs inlei fitti*g *n *a*h
htrn- IArrrnrr hencr nrl Rf,ihrinnfinn
r-"n?rl
/hl nrxrthrl I
h*v';!"
htrnl
Then, r*rrr*rvm the fmi;n Sl'!S" s*is',rr$ h*lding *a*h
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Page 2 of 7
Blowthrough Carb How-To
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Page 3 of 7
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Page 5 of 7
arb,How-To
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(or a
,place a srnall pi*ce af atuminurll heet, approximately T/16' x 3lr$'1; unde r:neath the
)vsrlt the,epoxy,frorn rJripping through' Mix up yoilr
a
remove it o
n At,
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n€
xy,set up
Yh
ro,
....l.....]..',Resgsetnhly..
,, fince.aliihe,*arhure,torsfirts,have hoen sleaned, irlspested, and rnodified ne-assembly can begin
T
lit ,Pa -'on',.,,.
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ri
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he new ones. You should alsr: have all ynur tools;
olaee the
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e ynu
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engine rnaKes at
)w rnuch vacuum
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ldle
Y{fu v\rlll
ur engine has at idle For exarnple' you have I ln Hg
ber is stannped on the diaphragm side of the valve
darv meterinq black, plurg lt wlth a power valve plug,
r.ber 26-36,
four: if you have a four-corner idie carh) small round
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Page 6 of 7
Carb How-To
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