Corky's Scimitars

If you have a long-term project and would like to share/document progress, this is for you.

Moderators: scimjim, philhoward, erikscimitardemon, Roger Pennington, Lukeyboy46

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (..and now an SS1 race car build)

Post by Corky » Wed Mar 21, 2018 6:02 pm

I still need to finish putting it back together to test it, but if the timing marks on the crank pulley now align to the strobe, I've found the issue !


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (..and now an SS1 race car build)

Post by Corky » Wed Mar 21, 2018 6:03 pm

philhoward wrote:
Wed Mar 21, 2018 6:01 pm
At least there's a picture to show how to get it wrong :lol:
True :lol: :hand:


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

efi_sprintgte
RSSOC Member
Posts: 1106
Joined: Fri Oct 22, 2010 6:24 pm
Location: Sutton, Surrey
Has thanked: 76 times
Been thanked: 53 times

Corky's Scimitars (..and now an SS1 race car build)

Post by efi_sprintgte » Wed Mar 21, 2018 7:13 pm

Car was looking really good Corky


JC

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (..and now an SS1 race car build)

Post by Corky » Wed Mar 21, 2018 8:11 pm

Thanks James, TBH it felt pretty good. It was great off the line and felt quick out of the corners, although it didn't seem to pick up speed too well at higher revs. But I put that down to having turned the boost down.

The graph says it all really
B734C488-615E-4A4E-8E95-6E3225347366.jpeg
B734C488-615E-4A4E-8E95-6E3225347366.jpeg (313.7 KiB) Viewed 856 times
Last edited by Corky on Wed Mar 21, 2018 8:25 pm, edited 1 time in total.


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (..and now an SS1 race car build)

Post by Corky » Wed Mar 21, 2018 8:12 pm

It all gets a bit messy after 3000 rpm.


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

User avatar
Nick
Posts: 2864
Joined: Tue May 15, 2007 3:38 pm
Location: Redditch
Been thanked: 57 times

Corky's Scimitars (..and now an SS1 race car build)

Post by Nick » Wed Mar 21, 2018 9:01 pm

Good torque. Hope re-timing sorts it.


Nick

MR2 and Beemer 3 series, currently no Scim!
Six times SSSC Class Winner
Not over the hill, just going up it faster !

User avatar
CNHSS1
RSSOC Member
Posts: 13887
Joined: Tue Aug 22, 2006 5:13 pm
Location: Shrewsbury, Shropshire
Has thanked: 227 times
Been thanked: 210 times
Contact:

Corky's Scimitars (..and now an SS1 race car build)

Post by CNHSS1 » Wed Mar 21, 2018 10:28 pm

Only 128hp???? That's cobblers!!! Went off the line like a missile!! Graph isn't right at all, power just drops off like there's a restriction, collapsing inlet pipe, running out of fuel (pressure) too small exhaust etc. I'd defo be looking at why it's like that. You have a non std turbo running 2-3psi more the stock and an intercooler, bespoke exhaust and getting less than std showroom power!!

I did notice when you have me a lift up the track to retrieve errant cones it sounded odd at idle, a little "off beat", could be timing out? Team Oakes DET ran much lower figure prior to harewood in 2016? Due to timing out 1 tooth

Needs investigating for sure. If it's fuelling related could have also lead to last head gasket issue (along with too much boost) be a shame to kill this engine too :-(


Racing is life, everything before and after, is just waiting--Steve McQueen
6 time Class Champ, 2006 & 2014 SSSC Champion

RIP Batmobile, await the Rise of Dark Knight 8)
Sabre 'Light Sabre' 360hp!!
Image

User avatar
CNHSS1
RSSOC Member
Posts: 13887
Joined: Tue Aug 22, 2006 5:13 pm
Location: Shrewsbury, Shropshire
Has thanked: 227 times
Been thanked: 210 times
Contact:

Corky's Scimitars (..and now an SS1 race car build)

Post by CNHSS1 » Wed Mar 21, 2018 10:30 pm

On the plus side handled and gripped very well, and times were good :-)


Racing is life, everything before and after, is just waiting--Steve McQueen
6 time Class Champ, 2006 & 2014 SSSC Champion

RIP Batmobile, await the Rise of Dark Knight 8)
Sabre 'Light Sabre' 360hp!!
Image

User avatar
swoakes
RSSOC Member
Posts: 6611
Joined: Thu Sep 21, 2006 12:23 pm
Location: Cheshire, UK
Has thanked: 21 times
Been thanked: 81 times

Corky's Scimitars (..and now an SS1 race car build)

Post by swoakes » Thu Mar 22, 2018 12:54 am

Yes the DET ran 1 tooth out on the exhaust cam for the first few months we owned the car following it over boosting at the test day. If you remember we had weird torque curves but power was only down by about 20 bhp from memory compared to output post pulley wheel change when we discovered the timing issue.

I'm surprised you didn't notice an issue Corky based on that number :)


Steve Oakes
SS1 DET Sprint Car

Former cars
SS1 DET Turbo sprint Project
Sabre Ti
SS1 Ti
1971 Yellow 5a
1985 SS1 1600
1978 Green/Silver 6a

Image
"Fail to prepare and you are preparing to fail."
Benjamin Franklin

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (..and now an SS1 race car build)

Post by Corky » Thu Mar 22, 2018 8:30 am

I’m surprised too. But it pulled off the line and out of the corners really well. Which would be expected looking at the dyno sheet. It didn’t feel like it was pulling as well over 5000rpm between fradley and the finish line, but I put that down to reduced boost. Maybe the over boosting had been flattering the engine’s performance.
I should get a bit of garage time on Friday, so can hopefully prove my cock up :lol:


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (..and now an SS1 race car build)

Post by Corky » Thu Mar 22, 2018 9:24 am

Ric said it looked like cam timing, he also mentioned that my car was creating a lot of RF interference with his equipment.

So hopefully the cam timing is now sorted, and I’ll now change the dizzy cap and HT leads.


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (....currently sprint car fettling )

Post by Corky » Thu Mar 22, 2018 5:41 pm

A little bit of measuring, counting and division, indicates that I was running 4.5 degrees advanced on the cam Which according to my research gives exactly the symptoms seen on the dyno, good low rev power but naff all at the top end.
Last edited by Corky on Thu Mar 22, 2018 7:11 pm, edited 1 time in total.


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

User avatar
td99
RSSOC Member
Posts: 1670
Joined: Sat Jun 30, 2007 9:37 pm
Location: Eindhoven, Netherlands
Has thanked: 16 times
Been thanked: 18 times

Corky's Scimitars (....currently sprint car fettling )

Post by td99 » Thu Mar 22, 2018 7:03 pm

Timing's a funny thing and to me the manufacturers/control systems never seem to get it right - How come? I made an error recently on the Ti and used the 20 degrees mark for the timing instead of the 15 mark. In town, at low revs (below 3500) it was fantastic, so much more alert and responsive, but lacked power when going faster. Many years ago I had same experience with Anglia 105e.


Trevor - 1800Ti daily driver
1800Ti DET project, RAV4

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (....currently sprint car fettling )

Post by Corky » Thu Mar 22, 2018 8:02 pm

I’ve no idea what my ignition timing was Trevor, the 4.5 degrees was the cam timing.

I’m going to try and set the ignition timing statically, then see how that compares to the strobe.


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

User avatar
Corky
RSSOC Member
Posts: 10565
Joined: Sun Sep 24, 2006 5:02 am
Location: Macclesfield
Has thanked: 123 times
Been thanked: 135 times

Corky's Scimitars (....currently sprint car fettling )

Post by Corky » Fri Mar 23, 2018 6:03 pm

I managed to get a day in the garage today. I've replaced the HT leads with a set of Accuspark 8mm silicone, and fitted a new dizzy cap and rotor arm.

Photos showing the half tooth difference between the alternative positions of the cam pulley. Angle of the photo doesn't help, but the ruler runs between the teeth on the lower photo and directly through the centre of a tooth on the upper pic.
IMG_1566.JPG
IMG_1566.JPG (297.4 KiB) Viewed 545 times
IMG_1565.JPG
IMG_1565.JPG (294.67 KiB) Viewed 545 times
Lined up at TDC, then moved to 15' BTDC and static timing set on the dizzy.
IMG_1569.JPG
IMG_1569.JPG (307.64 KiB) Viewed 540 times
All built back up
IMG_1572.JPG
IMG_1572.JPG (333.22 KiB) Viewed 545 times
I then went out for a drive, and it felt much better at the top end of the rev range. At low revs it didn't feel any different.

I now have a new problem. It's started to smoke on the over run and when sat at idle for too long. Under load it doesn't seem to be doing it though. I think this is could be something to do with me caning it at Curbs whilst the cam timing was out (rings or stem seals?), or maybe the seals on the turbo have given up ?

I've made a timing strut, and fitted the rear tow point and stickers. So I'm ready for Croft. If it goes bang, we have the technology to fix it :lol:

Edit:- Forgot to say that I've now got the strobe pointing at the 15' BTDC mark :D The only issue is that it only does that when the dizzy it at the extreme of adjustment. I'm wondering if the cam I sent to Autosprint had a slightly different position for the dizzy drive gear. It was a twin spark cam.
Last edited by Corky on Fri Mar 23, 2018 7:13 pm, edited 1 time in total.


Steve
Current:- SS1 Ti RG sprint car. VW Touareg 3.0 V6
Prev:- Sabre Ti, 3xSS1 Ti, SS1 16v Turbo Racer, 5XGTC, 2XSE6B, 2XSE5A, 2XV6 Coupe, Sabre 6
Project Threads & YouTube

“It's not the winning, it's the taking apart that counts"

Post Reply

Return to “Project Progress”