We are currently running on the new domain and server: www.Speed-Talk.com

IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/
(Right-click the URL and select "Bookmark this link")

Search found 3705 matches

by Belgian1979
Thu Dec 12, 2019 5:50 am
Forum: Engine Tech
Topic: spark plug gap vs lean mixtures
Replies: 19
Views: 721

Re: spark plug gap vs lean mixtures

It is a large bore engine, which may play a role as stated above. When referring to high rpm misfire I was always under the impression that this was caused by a dizzy type ignition where the time to load the coil deminishes rapidly with rpm. A CNP system doesn't have this drawback and the spark more...
by Belgian1979
Tue Dec 10, 2019 2:18 pm
Forum: Engine Tech
Topic: spark plug gap vs lean mixtures
Replies: 19
Views: 721

Re: spark plug gap vs lean mixtures

My cam has something to do with it, but I see it misfiring if I try to go to 14.7/1 which I'm required now to pass tech inspection/emissions. (recently changed rules here :roll: ) Due to the CNP I think I have enough to go wider, but not sure if it would help with that. The car is not exactly one th...
by Belgian1979
Tue Dec 10, 2019 1:48 am
Forum: Engine Tech
Topic: spark plug gap vs lean mixtures
Replies: 19
Views: 721

spark plug gap vs lean mixtures

What is the concensus here on spark plug gap to best run with lean mixtures (range 15-16 AFR) ?
BTW : I run LS1 CNP coils which are pretty powerfull and have a healthy spark.
by Belgian1979
Sat Dec 07, 2019 11:57 am
Forum: Engine Tech
Topic: dyno question
Replies: 4
Views: 558

Re: dyno question

I still have to research those parts. For now I'm concentrating on rebuilding the brake and mounting it on the roller bench. From that point onwards I will be looking into the power supply and regulation of the brake. This last one will have to be something that can be done through a laptop as I wan...
by Belgian1979
Fri Dec 06, 2019 4:19 pm
Forum: Engine Tech
Topic: dyno question
Replies: 4
Views: 558

Re: dyno question

Hi, Yes, it's preferred to put it into series, but the main reason is that you need to be able to keep the amps down when using it at full power. The amount of amps run through it determines how much braking it does. So you could do this with a 2 resistors in parallel where one is adjustable. Howeve...
by Belgian1979
Thu Dec 05, 2019 3:11 am
Forum: Engine Tech
Topic: dyno question
Replies: 4
Views: 558

dyno question

Anyone ever rebuilt a telma retarder to be used for a rolling road dyno. A while back I acquired a cc300 old truck telma that I'm going to use for this purpose (3000 NM). However, I need to take off the coils and do some repairs which involved refitting them. Was looking for tips on the correct piec...
by Belgian1979
Thu Nov 21, 2019 1:27 pm
Forum: Engine Tech
Topic: Jesel BUSHING lifters!!
Replies: 36
Views: 1815

Re: Jesel BUSHING lifters!!

I use what my cam manufacturer advised for my cam and valvetrain.
by Belgian1979
Thu Nov 21, 2019 9:22 am
Forum: Engine Tech
Topic: Do electric turbo chargers work???
Replies: 22
Views: 1188

Re: Do electric turbo chargers work???

gunt wrote:
Mon Nov 18, 2019 3:55 pm
audi are running them to eliminate turbo lag , so its there and could be in all the time depending on driving style
At 48 V though....
by Belgian1979
Thu Nov 21, 2019 9:18 am
Forum: Engine Tech
Topic: 72 corvette heads, manifold, and camshaft questions
Replies: 51
Views: 1469

Re: 72 corvette heads, manifold, and camshaft questions

A victor jr with a drop base aircleaner and holley 4150 worked perfect under the stock hood of my 79. A performer rpm will give better results and fit even better with the same filter and carb.
by Belgian1979
Thu Nov 21, 2019 4:50 am
Forum: Engine Tech
Topic: 72 corvette heads, manifold, and camshaft questions
Replies: 51
Views: 1469

Re: 72 corvette heads, manifold, and camshaft questions

Sounds like a plan. The one thing I would probably do different is use a 5.7 rod. Only reason is most of the 6" rod pistons use an oil ring support rail and I prefer not to have them on a street engine. Just my preference. I dont think the rod length will make a bit of difference in your applicatio...
by Belgian1979
Tue Nov 19, 2019 10:10 am
Forum: Engine Tech
Topic: Jesel BUSHING lifters!!
Replies: 36
Views: 1815

Re: Jesel BUSHING lifters!!

I have morel needle lifters. Had them out a while back. Lots of street miles, lots of idling. Currently 5000 miles on them. No issues to be found anywhere. However : - lots of cool enough oil. - HV oil pump - rev kit - meticulous valve lash checking and maintenance - short oil filter and oil interva...
by Belgian1979
Wed Nov 13, 2019 6:22 am
Forum: Engine Tech
Topic: 6.250 Rod Suppliers
Replies: 12
Views: 619

Re: 6.250 Rod Suppliers

Oliver
by Belgian1979
Wed Nov 06, 2019 9:14 am
Forum: Engine Tech
Topic: Senate Bill on Racing
Replies: 30
Views: 1863

Re: Senate Bill on Racing

Everywhere an attack is being undertaken on our hobbies/jobs. I wonder how far they can take it.

Hopefully this will bite them in the a$$ when everybody actually leaves their cars standing and the industry collapses altogether. :evil:
by Belgian1979
Tue Oct 29, 2019 9:01 am
Forum: Engine Tech
Topic: Platinum 215s feedback
Replies: 9
Views: 1037

Re: Platinum 215s feedback

MadBill wrote:
Sat Oct 26, 2019 9:25 pm
They're just assemble them as a shipping convenience. :P
True seemingly. Makes you wonder if it is worth it to buy an assembled head. I did that years ago assuming that when assembled in the factory everything was kept to close tolerances...unfortunately I was wrong.
by Belgian1979
Thu Oct 17, 2019 9:58 am
Forum: Engine Tech
Topic: rocker stud breaking
Replies: 14
Views: 958

Re: rocker stud breaking

I will tell him when I see him again. I can't take any photos at the moment as it's not my car and not here.