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Search found 1247 matches

by Geoff2
Sat Nov 28, 2020 1:38 am
Forum: Engine Tech
Topic: Speedmaster blocks....whats the skinny on these?
Replies: 13
Views: 1309

Re: Speedmaster blocks....whats the skinny on these?

Didn't see anything about orifices being off centre. Said orifices need checking, which could mean orifices not drilled right through &/or orifices may have machining debris in them.
by Geoff2
Mon Nov 23, 2020 1:47 am
Forum: Engine Tech
Topic: Big Issues with Cylinder Pressure (DCR)
Replies: 84
Views: 2162

Re: Big Issues with Cylinder Pressure (DCR)

A good cooling system will help tame detonation tendency.
by Geoff2
Sun Nov 22, 2020 2:04 am
Forum: Engine Tech
Topic: Crankshaft polish
Replies: 16
Views: 1108

Re: Crankshaft polish

Take it back & tell him to run it in HIS race motor, because it is not going in your motor.............
by Geoff2
Thu Nov 19, 2020 2:19 am
Forum: Engine Tech
Topic: Small cams on 106-108 LSA’s
Replies: 47
Views: 2145

Re: Small cams on 106-108 LSA’s

D. Vizard in one of his books says that if you want more low end/better idle, you do NOT widen the LSA, you reduce duration.

So Travis it sounds like you are on the right track..
by Geoff2
Tue Nov 17, 2020 2:06 am
Forum: Engine Tech
Topic: Who rebuilds/modifies Thermoquads?
Replies: 34
Views: 3524

Re: Who rebuilds/modifies Thermoquads?

I have owned & worked on every known model of the Aussie Ford Falcon TQs. Never seen an 'alloy bowl'. Can you post a pic?
by Geoff2
Sat Nov 14, 2020 2:27 am
Forum: Engine Tech
Topic: Spring locator to guide fitment
Replies: 11
Views: 404

Re: Spring locator to guide fitment

Comp Cams has a number of 0.630" ID locators; probably other brands as well.
by Geoff2
Wed Nov 11, 2020 12:48 am
Forum: Engine Tech
Topic: P/V clearance measurement techniques
Replies: 21
Views: 1036

Re: P/V clearance measurement techniques

I have checked V to P clearance with multi-grips on the rocker, gently pushing down until the valve contacts the piston. With the other hand, I use vernier calipers on the spring retainer to measure the installed height. After releasing the rocker, I measure the installed height gain; subtracting th...
by Geoff2
Sun Nov 08, 2020 2:23 am
Forum: Engine Tech
Topic: Dropping Fuel Pressure
Replies: 17
Views: 555

Re: Dropping Fuel Pressure

Vent too small? What am I not getting? Was ok for 8 years & SUDDENLY fuel pressure drops because the vent was/is too small????
by Geoff2
Thu Nov 05, 2020 2:36 am
Forum: Engine Tech
Topic: Weak part throttle performance
Replies: 41
Views: 1178

Re: Weak part throttle performance

351 cubes pushing 4900 lb is never going to be a sprinter... And 4900 lb with 3.55 gears is never going to be an economy queen.... Timing curve, as others have suggested. Also, check the float level. A metering rod with a richer [ thinner ] power step might also help. Advancing the cam 4* might help...
by Geoff2
Wed Nov 04, 2020 1:52 am
Forum: Engine Tech
Topic: jb1 piston coating hm elliot/piston clearance
Replies: 5
Views: 310

Re: jb1 piston coating hm elliot/piston clearance

0.0015" 'per side' is 0.003", which is quite a bit. If the original piston to bore clearance was, say, 0.003" then that clearance has gone.
by Geoff2
Tue Nov 03, 2020 1:51 am
Forum: Engine Tech
Topic: Filling aluminium head with brazing rods?
Replies: 21
Views: 1366

Re: Filling aluminium head with brazing rods?

The exh gas might be 1000*, but the metal temp is much lower...
by Geoff2
Tue Nov 03, 2020 1:49 am
Forum: Engine Tech
Topic: Dropping Fuel Pressure
Replies: 17
Views: 555

Re: Dropping Fuel Pressure

Make sure the fuel tank vent is not blocked.
by Geoff2
Sat Oct 31, 2020 3:35 am
Forum: Engine Tech
Topic: Safe distance between poly lock and rocker
Replies: 5
Views: 267

Re: Safe distance between poly lock and rocker

If the cam is solid lifter, no problem. If hydraulic, that clearance could be taken up by lifter pump up. Result could be bent pushrod....or worse.
by Geoff2
Mon Oct 26, 2020 2:53 am
Forum: Engine Tech
Topic: 70’s-80’s era low rise single plane intakes
Replies: 19
Views: 1042

Re: 70’s-80’s era low rise single plane intakes

The history speaks for itself doesn't it?

The Tarantula & Scorpion fell by the wayside pretty quickly. Then, some engines got the Torker, & then the Torker 2, both with the same rpm range?
by Geoff2
Mon Oct 26, 2020 2:49 am
Forum: Engine Tech
Topic: Piston quality?
Replies: 9
Views: 779

Re: Piston quality?

I have used their heads & know others who have also, with no problems. But I would hesitate to use a highly stressed part such as a piston without some feedback from someone who has used them.