Ralph wrote:My U20 had a valve seat dislodge and next week I should have the Roadster back on the road. Two questions: 1) is there a suggested RPM max and mileage period schedule to retorque the head? 2) to be safe as I bomb around, where is my reasonable redline once the break-in period is done? SU carbs, stock everything inside the engine
For inquiring minds I was VERY fortunate in that the only damage was the seat falling out...and yes, I am having all 8 seats replaced, and no, I don't know the history of the engine
1) Is there a retorque requirement?
2) check out some engine specs and dyno sheets. Max torque is around 4000 rpm. After 4400 its just making noise. I have been accused many times of short shifting.......
David
"When we were standing next to the motor while on the dyno, and the motor hit VVL, eyes went watery.."
spl310 wrote:Yes, Ralph. Contrary to some opinions, you don't have to bump redline every time
say what ? ! yes you do ... and I know how to solve the roll bar issue , I need one , so ...... just give it to me and problem solved ! .. my next 100$ is getting one bent for mine ..
"have welder now ,,will make anything" !
@lornac
make sure that you include the provision for a 'serious' plate under the body. the 'standard' holes have minimal strength - you need minimum 1/2 inch bolts to hold the roll bar in, otherwise it is mostly decorative and will rip out of the car in anything minorly serious.
Same, frankly with the seat bolts, they have little structural integrity as they are installed.
The miata bolts are 1/2 inch, the roadster bolts are way less than that.
If you are concerned with safety - consider these points.
Peter Harrison
1970 1600 (Stroker) - TOAD SAN (Eliza)
1970 1600 (Stock) - As Yet Unnamed
Lake Balboa (SFV) , California
Went to bolt my 5 speed transmission up and noticed the holes on the mount do not line up with the cross member.
My question is do I have the wrong cross member piece or do I have the wrong Transmission mount? Are all the cross members the same (4spd vs 5sp)? I know there is a difference just don't remember if its the mount or the cross member.
***I got this car in boxes and piecing it back together.
1967.5 2000 (In Frame off restoration)
1966 1600
1969 2000
spags1986 wrote:Went to bolt my 5 speed transmission up and noticed the holes on the mount do not line up with the cross member.
My question is do I have the wrong cross member piece or do I have the wrong Transmission mount? Are all the cross members the same (4spd vs 5sp)? I know there is a difference just don't remember if its the mount or the cross member.
***I got this car in boxes and piecing it back together.
The crossmembers are definitely different, I believe the mounts are the same though.
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.
