Todays Project - What did you do today?
(11-22-2012, 12:38 AM)bobm4360 Wrote: Ayup! When the restoration is 90% done, you have 90% of the work yet to doWhip

Regards,
Bob
However I do the sums there is always 100% of the work left to do, because no matter how much has been done you have to do all of the rest of it Happyno

4R8,
There's nothing like Nissan engines for forced induction, back in the day I used to have a Lotus 7 styled car for hill climbing, I built it but only ever took it out on practice days as running my machine shop got in the way of me getting any racing done, I would regularly take it out on the street in our quiet little industrial estate despite a lack of registration, It used the old Nissan A12 from the 120Ys and Datsun 1200s as they were tiny and took turbo charging very well, We would pump 26 lbs of boost through them using a Bog stock short motor, the head was decomp'd, roller tip rockers made and fitted on needle rollers and the valve springs uprated, but the bottom end simply freshened up with new pistons rings and bearings, As a Vibration engineering specialist I had all the gear to balance bottom ends so I did set up the first three engines for balancing but three out of three were as close as I could measure to spot on, so I didn't even bother after that, The little Toyota engines were almost as good and sat lower as they were a slant fitting but I had a good supply of Nissans so I used them.

An A12 at 1171cc's + 26lb of boost would rev past 11,500 RPM and clock over 200 BHP (the limit of my engine dyno) before the head studs stretched and the cooling system would over pressure often blowing off hoses and bubbling radiator tanks as the radiator cap couldn't handle the flow rate so couldn't control system pressure. Under the CAMs regulations at the time the penalty for forced induction was a capacity handicap of 1.7:1 factor but the cost of getting a normally aspirated 2000cc engine while keeping the carburation compliant up to 200BHP was prohibitive and even then they weighed twice as much and needed heavier gearboxes and final drives, so better tyres and a stronger heavier chassis. with the A12 I had the whole car with me in it down under 400Kg (900lbs) which meant well more than 500BHP/Ton!

I cracked one bore, stripped some head stud holes and melted pistons as a result of poor mixture control and the resulting pre ignition, but I never burned a single bearing or snapped a rod, I have nothing but respect for those little Nissans.Worthy

The best part was that a basic starter engine never cost more than a case of beer, and with all the parts for a bottom end build being less than $150 and taking about three hours to put together, I just didn't care about blowing them up, when the other boys would go on a weekend bender drinking, drugging, smoking and gambling away the same sort of cash in a weekend, I was building race engines and learning the skills while having an absolute blast.

I did buy an A15 with a set of twin hitachi "SUs" but never got around to fitting it. The A15 would have put it into a lower class for racing but I just couldn't bear the thought of losing my horsepower Happyno

Regards
Rick
Whatever it is, do it today, Tomorrow may not be an option and regret outlasts fatigue.
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Messages In This Thread
RE: Todays Project - by DanH - 08-14-2012, 10:13 PM
RE: Todays Project - by DaveH - 08-15-2012, 01:01 PM
RE: Todays Project - by doubleboost - 08-15-2012, 03:20 PM
RE: Todays Project - What did you do today? - by Wawoodman - 09-05-2012, 01:03 PM
RE: Todays Project - What did you do today? - by Wawoodman - 09-27-2012, 07:15 PM
RE: Todays Project - What did you do today? - by Wawoodman - 09-29-2012, 12:50 PM
RE: Todays Project - What did you do today? - by Wawoodman - 10-10-2012, 02:08 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 10-16-2012, 02:31 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 11-01-2012, 07:35 AM
RE: Todays Project - What did you do today? - by Bill Gruby - 11-01-2012, 04:16 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 11-02-2012, 08:50 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 11-03-2012, 07:57 AM
RE: Todays Project - What did you do today? - by 4R8 - 11-14-2012, 06:51 PM
RE: Todays Project - What did you do today? - by 4R8 - 11-18-2012, 11:45 PM
RE: Todays Project - What did you do today? - by 4R8 - 11-19-2012, 04:29 PM
RE: Todays Project - What did you do today? - by 4R8 - 11-21-2012, 03:35 PM
RE: Todays Project - What did you do today? - by Rickabilly - 11-22-2012, 06:08 AM
RE: Todays Project - What did you do today? - by 4R8 - 11-22-2012, 04:09 PM
RE: Todays Project - What did you do today? - by 4R8 - 12-01-2012, 03:47 PM
RE: Todays Project - What did you do today? - by 4R8 - 12-02-2012, 09:52 AM
RE: Todays Project - What did you do today? - by Bill Gruby - 01-10-2013, 07:25 AM
RE: Todays Project - What did you do today? - by Bill Gruby - 01-27-2013, 02:55 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 02-02-2013, 05:05 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 02-03-2013, 09:31 AM
RE: Todays Project - What did you do today? - by Bill Gruby - 02-03-2013, 11:28 AM
RE: Todays Project - What did you do today? - by Bill Gruby - 02-06-2013, 06:17 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 02-06-2013, 07:55 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 02-07-2013, 06:26 PM
RE: Todays Project - What did you do today? - by Wawoodman - 02-08-2013, 02:06 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 02-09-2013, 04:43 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 02-27-2013, 11:32 AM
RE: Todays Project - What did you do today? - by Bill Gruby - 06-10-2013, 07:50 AM
New bench vise! - by PixMan - 08-10-2013, 05:26 PM
RE: Todays Project - What did you do today? - by Bill Gruby - 09-26-2013, 07:37 AM
RE: Todays Project - What did you do today? - by Bill Gruby - 09-27-2013, 08:24 AM
RE: Todays Project - ER 25 collet rack - by Shawn - 01-02-2014, 10:19 PM
RE: Todays Project - What did you do today? - by RobWilson - 07-08-2014, 03:48 PM
RE: Todays Project - What did you do today? - by RobWilson - 07-10-2014, 03:47 PM
RE: Todays Project - What did you do today? - by RobWilson - 07-12-2014, 11:56 AM
RE: Todays Project - What did you do today? - by RobWilson - 07-12-2014, 12:08 PM
RE: Todays Project - What did you do today? - by RobWilson - 07-13-2014, 09:36 AM
RE: Todays Project - What did you do today? - by RobWilson - 07-13-2014, 09:52 AM
RE: Todays Project - What did you do today? - by RobWilson - 07-13-2014, 10:39 AM
RE: Todays Project - What did you do today? - by RobWilson - 07-13-2014, 11:21 AM
RE: Todays Project - What did you do today? - by RobWilson - 07-14-2014, 12:49 PM
RE: Todays Project - What did you do today? - by RobWilson - 07-24-2014, 01:25 PM
RE: Todays Project - What did you do today? - by RobWilson - 07-24-2014, 02:08 PM
RE: Todays Project - What did you do today? - by RobWilson - 08-03-2014, 12:31 PM
RE: Todays Project - What did you do today? - by RobWilson - 08-03-2014, 12:35 PM
RE: Todays Project - What did you do today? - by RobWilson - 08-24-2014, 05:17 AM
RE: Todays Project - What did you do today? - by RobWilson - 09-09-2014, 03:11 PM
RE: Todays Project - What did you do today? - by RobWilson - 09-10-2014, 07:48 AM
RE: Todays Project - What did you do today? - by RobWilson - 09-27-2014, 03:57 PM
RE: Todays Project - What did you do today? - by RobWilson - 09-27-2014, 04:58 PM
RE: Todays Project - What did you do today? - by RobWilson - 09-28-2014, 03:02 AM
RE: Todays Project - What did you do today? - by RobWilson - 09-28-2014, 08:33 AM
Process development - by PixMan - 11-23-2014, 08:09 PM
PVC Collars - by Micktoon - 12-10-2014, 08:10 PM
RE: Todays Project - What did you do today? - by RobWilson - 02-21-2015, 03:53 PM
RE: Todays Project - What did you do today? - by RobWilson - 02-21-2015, 04:08 PM
RE: Todays Project - What did you do today? - by RobWilson - 02-22-2015, 03:31 AM
RE: Todays Project - What did you do today? - by RobWilson - 02-22-2015, 03:34 AM
RE: Todays Project - What did you do today? - by RobWilson - 03-15-2015, 04:33 AM
RE: Todays Project - What did you do today? - by RobWilson - 03-16-2015, 10:11 AM
RE: Todays Project - What did you do today? - by RobWilson - 03-29-2015, 03:46 AM
RE: Todays Project - What did you do today? - by RobWilson - 03-29-2015, 08:58 AM
RE: Todays Project - What did you do today? - by RobWilson - 03-29-2015, 10:04 AM
RE: Todays Project - What did you do today? - by RobWilson - 03-29-2015, 12:32 PM
RE: Todays Project - What did you do today? - by RobWilson - 03-29-2015, 01:20 PM
RE: Todays Project - What did you do today? - by RobWilson - 04-08-2015, 11:05 AM
RE: Todays Project - What did you do today? - by RobWilson - 05-10-2015, 02:10 PM
RE: Todays Project - What did you do today? - by RobWilson - 05-24-2015, 11:34 AM
RE: Todays Project - What did you do today? - by RobWilson - 05-24-2015, 02:47 PM
RE: Todays Project - What did you do today? - by RobWilson - 05-25-2015, 12:29 AM
RE: Todays Project - What did you do today? - by RobWilson - 05-31-2015, 11:24 AM
RE: Todays Project - What did you do today? - by RobWilson - 06-01-2015, 02:11 AM
RE: Todays Project - What did you do today? - by RobWilson - 06-01-2015, 02:55 AM
RE: Todays Project - What did you do today? - by RobWilson - 06-01-2015, 09:37 AM
RE: Todays Project - What did you do today? - by RobWilson - 06-01-2015, 11:47 AM
RE: Todays Project - What did you do today? - by RobWilson - 06-01-2015, 02:38 PM
RE: Todays Project - What did you do today? - by RobWilson - 08-15-2015, 11:03 AM
RE: Todays Project - What did you do today? - by RobWilson - 08-23-2015, 03:27 AM
RE: Todays Project - What did you do today? - by RobWilson - 08-27-2015, 02:17 PM
RE: Todays Project - What did you do today? - by RobWilson - 09-12-2015, 07:12 AM
RE: Todays Project - What did you do today? - by RobWilson - 09-19-2015, 11:17 AM
RE: Todays Project - What did you do today? - by RobWilson - 09-19-2015, 12:15 PM
RE: Todays Project - What did you do today? - by RobWilson - 09-20-2015, 03:23 AM
RE: Todays Project - What did you do today? - by RobWilson - 09-26-2015, 02:53 PM
RE: Todays Project - What did you do today? - by RobWilson - 09-27-2015, 03:43 PM
RE: Todays Project - What did you do today? - by RobWilson - 10-23-2015, 07:17 AM
RE: Todays Project - What did you do today? - by RobWilson - 10-24-2015, 12:35 PM
RE: Todays Project - What did you do today? - by RobWilson - 10-28-2015, 03:07 PM
I finally finished something! - by wawoodman - 11-06-2015, 07:31 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-08-2015, 02:20 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-23-2015, 12:15 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-30-2015, 03:06 PM
RE: Todays Project - What did you do today? - by RobWilson - 12-01-2015, 11:10 AM
RE: Todays Project - What did you do today? - by RobWilson - 11-30-2015, 04:58 PM
RE: Todays Project - What did you do today? - by RobWilson - 12-01-2015, 11:02 AM
RE: Todays Project - What did you do today? - by RobWilson - 12-01-2015, 11:13 AM
RE: Todays Project - What did you do today? - by RobWilson - 12-01-2015, 11:07 AM
RE: Todays Project - What did you do today? - by RobWilson - 12-01-2015, 11:34 AM
RE: Todays Project - What did you do today? - by RobWilson - 12-10-2015, 02:08 PM
RE: Todays Project - What did you do today? - by RobWilson - 12-21-2015, 01:07 PM
RE: Todays Project - What did you do today? - by RobWilson - 12-21-2015, 01:57 PM
RE: Todays Project - What did you do today? - by RobWilson - 12-21-2015, 02:24 PM
RE: Todays Project - What did you do today? - by RobWilson - 01-06-2016, 04:46 PM
RE: Todays Project - What did you do today? - by RobWilson - 01-06-2016, 05:55 PM
RE: Todays Project - What did you do today? - by RobWilson - 01-07-2016, 03:42 PM
RE: Todays Project - What did you do today? - by RobWilson - 01-07-2016, 04:18 PM
RE: Todays Project - What did you do today? - by RobWilson - 01-18-2016, 01:27 PM
RE: Todays Project - What did you do today? - by RobWilson - 01-19-2016, 03:47 PM
RE: Todays Project - What did you do today? - by RobWilson - 01-25-2016, 12:04 PM
RE: Todays Project - What did you do today? - by RobWilson - 01-31-2016, 10:34 AM
RE: Todays Project - What did you do today? - by RobWilson - 01-31-2016, 02:28 PM
RE: Todays Project - What did you do today? - by RobWilson - 02-01-2016, 11:47 AM
RE: Todays Project - What did you do today? - by RobWilson - 02-01-2016, 11:57 AM
RE: Todays Project - What did you do today? - by RobWilson - 01-31-2016, 02:30 PM
RE: Todays Project - What did you do today? - by RobWilson - 02-14-2016, 10:08 AM
RE: Todays Project - What did you do today? - by RobWilson - 10-13-2016, 01:16 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-06-2016, 11:08 AM
RE: Todays Project - What did you do today? - by RobWilson - 11-07-2016, 03:50 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-09-2016, 04:34 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-12-2016, 04:36 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-12-2016, 04:50 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-12-2016, 05:21 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-12-2016, 05:27 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-12-2016, 05:33 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-13-2016, 11:54 AM
RE: Todays Project - What did you do today? - by RobWilson - 11-16-2016, 03:50 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-19-2016, 12:00 PM
RE: Todays Project - What did you do today? - by RobWilson - 11-21-2016, 03:42 PM
RE: Todays Project - What did you do today? - by RobWilson - 12-04-2016, 07:49 AM
RE: Todays Project - What did you do today? - by RobWilson - 12-27-2016, 12:42 PM
RE: Todays Project - What did you do today? - by RobWilson - 12-27-2016, 11:01 PM
RE: Todays Project - What did you do today? - by RobWilson - 12-28-2016, 04:56 AM
RE: Todays Project - What did you do today? - by Tom Terrific - 03-30-2020, 08:43 PM
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