 Type 4 rebuild questions |
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| mepstein |
 Nov 19 2018, 08:14 PM
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#1
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914-6 GT in waiting  Group: Members Posts: 19,578 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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What can I do to rebuild my 1.7 for more HP and torque but keep the original d-jet.
piston and cylinders crank camshaft heads ? I know I can't change the cam too much but is there one that will do better and still work with d-jet. I know there is modern FI but I'm not interested. No carbs. I'm not looking for all out HP or dropping 10K on an engine kit. I just want a nice bump in power, if possible, while keeping a stock looking engine. |
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| mepstein |
Nov 20 2018, 02:50 PM
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#2
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914-6 GT in waiting Group: Members Posts: 19,578 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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I already have 94mm Mahle P&C's, 2.0 crank and a FI cam kit. I'm wondering if any of those things will make a difference if I rebuild the engine. If it's little to none, or not a combo that will work, I won't bother. If I could get another 15hp, well that's a 20% increase on that engine so It would be worth it to me.
I have a 250lb weight reduction planned (on paper) so a little boost with a much lighter car would make it fun. |
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| rgalla9146 |
Nov 21 2018, 04:58 PM
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#3
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Advanced Member Group: Members Posts: 4,641 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None
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QUOTE(mepstein @ Nov 20 2018, 03:50 PM)  I already have 94mm Mahle P&C's, 2.0 crank and a FI cam kit. I'm wondering if any of those things will make a difference if I rebuild the engine. If it's little to none, or not a combo that will work, I won't bother. If I could get another 15hp, well that's a 20% increase on that engine so It would be worth it to me. I have a 250lb weight reduction planned (on paper) so a little boost with a much lighter car would make it fun. What year chassis are you using ? Where will the -250 lb come from ? (IMG:style_emoticons/default/idea.gif) |
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Posts in this topic
mepstein Type 4 rebuild questions Nov 19 2018, 08:14 PM
Mark Henry Webcam #73
96mm KB's for 66mm crank and move u... Nov 19 2018, 08:58 PM
mepstein
Webcam #73
96mm KB's for 66mm crank and move ... Nov 19 2018, 09:39 PM Chris914n6 The big difference with Djets is ecu and injectors... Nov 20 2018, 01:20 AM BeatNavy Mark (E) I'm doing a similar build right now. ... Nov 20 2018, 06:05 AM Racer I know a bump to a 1911 was always popular for 1.7... Nov 20 2018, 07:05 AM saigon71 FAT 440 MP camshaft is great with D-jet.
I think ... Nov 20 2018, 07:08 AM Literati914 Posted in the classifieds?, you amateur :poke:
... Nov 20 2018, 09:35 AM mepstein
Posted in the classifieds?, you amateur :poke:
... Nov 20 2018, 01:01 PM 914Sixer Correct me if I am wrong, but the stock 1.7 made 8... Nov 20 2018, 09:42 AM Racer
Correct me if I am wrong, but the stock 1.7 made ... Nov 20 2018, 11:22 AM porschetub
Correct me if I am wrong, but the stock 1.7 made... Nov 21 2018, 02:03 AM GregAmy "Subscribing". My 2L street car is runni... Nov 20 2018, 10:07 AM yellowporky getting ready to build up my 73 1.7 next month.
T... Nov 20 2018, 10:26 AM Alapone Just curious, has anyone built a motor with a 66mm... Nov 20 2018, 11:09 AM Mark Henry
Mark (E) I'm doing a similar build right now.... Nov 20 2018, 05:16 PM 914Sixer My bad, I got on the wrong info line. 88 hp was f... Nov 20 2018, 01:13 PM Jamie
My bad, I got on the wrong info line. 88 hp was ... Nov 20 2018, 02:41 PM thelogo If your stick in with djet = stay bone stock
If y... Nov 20 2018, 02:40 PM mepstein
I already have 94mm Mahle P&C's, 2.0 cra... Nov 21 2018, 05:15 PM rgalla9146
[quote name='rgalla9146' post='2667542' date='Nov... Nov 21 2018, 06:02 PM mepstein
[quote name='rgalla9146' post='2667542' date='No... Nov 21 2018, 06:16 PM worn
[quote name='rgalla9146' post='2667542' date='Nov... Nov 21 2018, 06:14 PM JOEPROPER I think you're right about looking at HP incre... Nov 20 2018, 04:24 PM TravisNeff The CA spec 73 1.7 was 72 HP, lower than the 1.8 b... Nov 20 2018, 05:03 PM 76-914 Leave it stock and keep the RPM's up. Those ar... Nov 20 2018, 05:06 PM jcd914 Stock 1.7L at 8.2:1 compression ratio was 80HP (72... Nov 20 2018, 07:51 PM mepstein
Stock 1.7L at 8.2:1 compression ratio was 80HP (7... Nov 20 2018, 08:06 PM worn
Stock 1.7L at 8.2:1 compression ratio was 80HP (... Nov 20 2018, 09:09 PM mepstein
[quote name='mepstein' post='2667271' date='Nov 2... Nov 20 2018, 09:17 PM Valy The static CR doesn't say much without conside... Nov 21 2018, 01:14 AM JamesM I think you are starting in the wrong place. the g... Nov 21 2018, 03:18 AM mepstein
I think you are starting in the wrong place. the ... Nov 21 2018, 07:29 AM scott_in_nh
Ditch the d-jet and you could do something like t... Nov 21 2018, 11:21 AM Front yard mechanic You could always turbo Nov 21 2018, 08:28 AM ClayPerrine
You could always turbo
OK.. I have to say it..... Nov 21 2018, 01:13 PM worn
You could always turbo
OK.. I have to say it.... Nov 21 2018, 06:10 PM Dave_Darling
"You can't turbo a 914!!!... Nov 22 2018, 02:24 PM 914forme Source a 2.0L bus intake and that keeps the D-Jet ... Nov 21 2018, 04:31 PM cgnj Mark,
Here is the link regarding the plenums.2270 ... Nov 21 2018, 09:06 PM ottox914 See the various builds linked in my sig. Very hap... Nov 24 2018, 10:23 PM |
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