“SUN” SERVICE STATION

Sun (Auckland), Volume II, Issue 438, 21 August 1928, Page 6

“SUN” SERVICE STATION

mHE “Motordom” section of The Sun includes in its service to readers a Queries and Answers Department, the object of which is to give accurate information regarding mechanical and touring subjects. Whatever the particular puzzle may be in either diagnosing irritating troubles, or motoring information of any kind, “Headlight" will endeavour to help, or refer the point to men who are recognised automobile experts in their respective lines. » All communications must be accompanied by the inquirer’s name ana address (not for publication), and sent to THE SUN “Service Station, Motordom,” THE SUN, Auckland. Answers will appear weekly in this column.

J.E.B.—Kindly inform me as to what should be the trouble with my 1925 roadster. It is very hard to start, but after it once kicks it runs perfectly. Have checked up on spark plugs and carburettor. ♦ * * Check timer, clean corrosion off the battery; also check battery leads from starter switch to dash. H.B.C.—Please tell me the following: (1) Top speed of Whippet 4, (2) top speed of Erskine Six, and (3) is the tread of a Marmon 8 and Erskine narrower than the standard practice. * * * (1) 58 miles an hour; (2) 60 miles an hour; (3) it is practically the same. J.M.P.—Have you any idea where I can get a powder to mix with water to manufacture benzine. * * * Xo, never heard of any such powder and do not believe it is in existence. J.J.—Will you please tell me the gear ratio in low, second, high and reverse of a 1926 Dodge sedan. * * * Low 24 to 1, second 12 to 1, high 4.16 to 1, and reverse 24 to 1. G.S.T.—Could you tell me anything about the 1922 Stutz, 4-cylinder dual ignition. (1) The diameter and stroke of pistons, (2) what is the rated also maximum horse-power, (3) what is the maximum speed of the car. * * * (1) 4 3-8 x 6; (2) 30 horse-power and 60 horse-power; (3) 75 miles an hour. J.C.A.—Kindly inform me in next Tuesday’s Motoring the following in regard to Chrysler 50 model sedan: (1) When motor is running at low speed in high gear (about 10 miles an hour) there is a tendency to jerk. What is cause and remedy (2) What is the maximum speed without injury to motor? (3) What could cause wearing out of first and second gear at 6,000 miles? (1) Have motor tuned up. You probably need carburettor or ignition adjustment or a valve grind; (2) 40 miles an hour, (3) improper lubrication.

V.C.—What is the maximum cle*ance allowable between cylinder an. piston (when cold) in the Buicx torv? Nash? (2) What clearance. » considered perfect by these nianoor turers? (3) What clearance are btuu 8 and Cadillac pistons fittea. (1) Buick. .002 to .00* inch: .004; (2) .002 to .004; (3) S tut * *• .003; Cadillac, .002. A.R.—Have a 1922 Buiclc vou kindly answer these question! lative to this machine? „ (1) Can I replace valve fnndes£ must this be done with a machine? (2) I notice that the upper Conner ins rod bearings are practically * out while the lower portion condition. Can I nr* should they be replaced with ones? , io(3) How is a loose mam cated and after that is from will a shim have to be rem _ y* the other two bearings to keep crankshaft level? t re(4) What is the best way move paint? # 0 (1) Yes. you can replace valve without a special machine, l lia ji v de* with new-one; (3) you u ~ ‘ tect by a thump ir, .. ens ]fU an hourbetween 30 and 40 F ,L arin gs. <4l Would take up on all Suggest you either use l^ 1 mover which can bepurc-hasea , accessory store or have paint shop. P.D.S.—Will you fol ( l ?r i Wh2t U “bo°u r m r.p.m. of a 1925 in A 1 shape? ( - ) . Whal hjv without injury to motor, w wh*, « developed at this r.p.m.. < I*2S maximum r.p.m. wl thout model? (5) Maximum r.p. deve lopeJ jury to motor? (6) WWtM * at this r.p.m.? <»> the Star Six motor? « r.p.m, without mju hlg rP m What h.p. developed at th (1) 2,600 r.p.m. < 2 > <*> r.p.m. (3) 54 h.p. at 2.600 r P () „wx 2.700 r.p.m. (o) - 4 «® r „P J£ r.p.m- <W (7) 2.400 r.p.m. (»> *” vv 45 h.p. at 2,400 r.p.m.