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> Type 4 rebuild questions
mepstein
post Nov 19 2018, 08:14 PM
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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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914Sixer
post Nov 20 2018, 09:42 AM
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Correct me if I am wrong, but the stock 1.7 made 88 hp in 70,71 according to brochure. They made it happen with domed pistons.
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Racer
post Nov 20 2018, 11:22 AM
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QUOTE(914Sixer @ Nov 20 2018, 10:42 AM) *

Correct me if I am wrong, but the stock 1.7 made 88 hp in 70,71 according to brochure. They made it happen with domed pistons.



i think that is incorrect. I believe my Stock early 1.7 was rated at 80hp. By 72 or maybe 73 they were down to approx 75hp.

Really might depend if you are looking at DIN, SAE, Gross or Net too as all were popular Brochure horsepower tools (IMG:style_emoticons/default/wink.gif)
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porschetub
post Nov 21 2018, 02:03 AM
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QUOTE(Racer @ Nov 21 2018, 06:22 AM) *

QUOTE(914Sixer @ Nov 20 2018, 10:42 AM) *

Correct me if I am wrong, but the stock 1.7 made 88 hp in 70,71 according to brochure. They made it happen with domed pistons.



i think that is incorrect. I believe my Stock early 1.7 was rated at 80hp. By 72 or maybe 73 they were down to approx 75hp.

Really might depend if you are looking at DIN, SAE, Gross or Net too as all were popular Brochure horsepower tools (IMG:style_emoticons/default/wink.gif)


(IMG:style_emoticons/default/agree.gif) correct.
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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 crank...   Nov 20 2018, 02:50 PM
rgalla9146   I already have 94mm Mahle P&C's, 2.0 cran...   Nov 21 2018, 04:58 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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