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Search found 56 matches

by jasonn
Tue Jun 30, 2020 7:39 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

Same lifters? What's the bore clearance? Honestly do not know lifter clearance, but yes, the same lifters, so I can rule that out. Almost has to be either the oil pump or a bearing. And since cam bearings have not been checked at all, I think that is where I am at. I will pull the engine out and ap...
by jasonn
Tue Jun 30, 2020 7:35 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

Tapping out!! WTH? Every flippin engine I have ever run will gain temperature. You must have had a special one? Cam Bearing's? No could be the muffler bearings. [/quote] I was asking for some ideas from people who had some kind of intelligence. Go back under your rock and stay out of this thread.
by jasonn
Tue Jun 30, 2020 7:33 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

Does the cam bearing have a groove on the back side of the bearing??? That and 3 feed holes so they can be clocked correctly?? Been using the Dart supplied bearings lately up here and that is how they are made. Have not tried any others so I am guessing the ford uses the same style as the GM block ...
by jasonn
Tue Jun 30, 2020 7:29 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

The couple of engines I've known that had low oil pressure only after warming up each had excessive bearing clearances. Like, down to the copper. The rod bearings often suffer first, so the inspection of a few main bearings might have missed that. I don't understand the cam bearings "squishing", bu...
by jasonn
Mon Jun 29, 2020 12:57 pm
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

Just got off phone with friend of mine who is a close friend of couple other very respected engine builders in area. One is Lance Line who is VERY good. (jasons brother) Both these builders have seen with an engine overheat, that the cam bearings will squish? Causing excessive clearance? Thoughts? W...
by jasonn
Mon Jun 29, 2020 10:45 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

First thing to do is to wire the water pump/fan switch to a 210 degree snap switch near the upper radiator hose. Wire it into the hot side of the switch so that if you forget to turn on the switch it'll still turn everything on at 210. If it overheats at anything over about 30 mph (and the engine i...
by jasonn
Mon Jun 29, 2020 10:21 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

Are they mechanical cap tube gauges or eletric with sensor gauges . Did you replace sensors if electric . If mechanical were they the same make and model gauge . Havng works as an HVAC tech for 35 yrs I have seen a lot of variances in supposed calibrated instrumentsbetween differnt brands and model...
by jasonn
Mon Jun 29, 2020 8:36 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

WAG that pressure relief valve in oil pump is damaged in some way (spring, etc.). Don't forget now -- good lesson. You should set up the coolant pump and fan so that they reset to being on every time the ignition is turned off. People have many distractions and you must protect your ride against th...
by jasonn
Mon Jun 29, 2020 8:33 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Re: Severe engine overheat = now overheating oil???

What oil pump- new/old? What are the bearing clearances? If it is NOT a high volume/pressure pump and has wide clearance - with 10/30 oil it is probably not too bad...IMO. If you are worried about the oils temp that will take a gauge or you could use a temp gun on the pan when you stop ..... Maybe ...
by jasonn
Mon Jun 29, 2020 7:05 am
Forum: Engine Tech
Topic: Severe engine overheat = now overheating oil???
Replies: 18
Views: 505

Severe engine overheat = now overheating oil???

This may bet a bit long, but really need some help. Trying to give all info up front. Just rebuilt my engine over winter with new bearings, rings, honed, gaskets etc, just a refresh after 6 years of beatings. But old pistons and valve springs. (he checked springs and they seemed still good) My broth...
by jasonn
Fri May 08, 2020 7:04 am
Forum: Engine Tech
Topic: Stock Ford 351W 4bbl dyno numbers
Replies: 20
Views: 1287

Re: Stock Ford 351W 4bbl dyno numbers

piston guy wrote:
Thu May 07, 2020 3:42 pm
Galon ,
As crazy as it seems you might have made 290 with a stock cast iron 351W 4 barrel manifold instead of the Edelbrock Performer RPM.
Curious why you say that? Is the rpm THAT bad? I have one on a 408 because of hood clearance.
by jasonn
Wed Nov 27, 2019 6:51 am
Forum: Engine Tech
Topic: Anyone have HI-6 ignition box schematic?
Replies: 15
Views: 1177

Re: Anyone have HI-6 ignition box schematic?

I just googled hi-6 wiring. Comes right up.
by jasonn
Fri Mar 16, 2018 10:11 am
Forum: Engine Tech
Topic: Another Header issue.
Replies: 48
Views: 3754

Re: Another Header issue.

I have a 70 mach with a 408 windsor stroker. vic jr heads, dual plane perf rpm intake. 750 holley with a small hyd roller. 1 5/8 headers. Dyno'd at 525hp. Tons of torque. I am sure it could pick up a bit with bigger headers (among other things) But It's a blast to drive and I am happy.
by jasonn
Mon Oct 23, 2017 7:27 am
Forum: Engine Tech
Topic: Pressure in radiator after engine is totally cool
Replies: 49
Views: 3708

Re: Pressure in radiator after engine is totally cool

Had similar pressure problem, it ended up being the water additive we were using in race motor. Tested for compression gases in water, even pulled the top end to check gaskets and cracks, found nothing, put everything back together filled coolant system with plain water no more pressure after cool ...